diff --git a/pkg/interface/src/logic/lib/omnibox.js b/pkg/interface/src/logic/lib/omnibox.ts
similarity index 92%
rename from pkg/interface/src/logic/lib/omnibox.js
rename to pkg/interface/src/logic/lib/omnibox.ts
index 1870db33f..e20fd22a7 100644
--- a/pkg/interface/src/logic/lib/omnibox.js
+++ b/pkg/interface/src/logic/lib/omnibox.ts
@@ -10,8 +10,18 @@ const makeIndexes = () => new Map([
     ['other', []]
   ]);
 
+export interface OmniboxItem {
+  title: string;
+  link: string;
+  app: string;
+  host: string;
+  description: string;
+  shiftLink: string;
+  shiftDescription: string;
+}
+
 // result schematic
-const result = function(title, link, app, host, description = 'Open', shiftLink = null, shiftDescription = null) {
+const result = function(title: string, link: string, app: string, host: string, description = 'Open', shiftLink = null as string | null, shiftDescription = null as string | null): OmniboxItem {
   return {
     'title': title,
     'link': link,
@@ -93,7 +103,7 @@ const otherIndex = function(config) {
   return other;
 };
 
-export default function index(contacts, associations, apps, currentGroup, groups, hide) {
+export default function index(contacts, associations, apps, currentGroup, groups, hide): Map<string, OmniboxItem[]> {
   const indexes = makeIndexes();
   indexes.set('ships', shipIndex(contacts));
   // all metadata from all apps is indexed
@@ -117,7 +127,7 @@ export default function index(contacts, associations, apps, currentGroup, groups
         let app = each['app-name'];
         if (each['app-name'] === 'contacts') {
           app = 'groups';
-        };
+        }
 
         if (each['app-name'] === 'graph') {
           app = each.metadata.config.graph;
@@ -159,4 +169,4 @@ export default function index(contacts, associations, apps, currentGroup, groups
   indexes.set('other', otherIndex(hide));
 
   return indexes;
-};
+}
diff --git a/pkg/interface/src/logic/lib/tokenizeMessage.js b/pkg/interface/src/logic/lib/tokenizeMessage.js
index 941742328..19f231316 100644
--- a/pkg/interface/src/logic/lib/tokenizeMessage.js
+++ b/pkg/interface/src/logic/lib/tokenizeMessage.js
@@ -5,7 +5,7 @@ const URL_REGEX = new RegExp(String(/^([^[\]]*?)(([\w\-\+]+:\/\/)[-a-zA-Z0-9:@;?
 
 const PATP_REGEX = /^([\s\S]*?)(~[a-z_-]+)([\s\S]*)/;
 
-const GROUP_REGEX = new RegExp(String(/^([\s\S ]*?)(~[-a-z_]+\/[-a-z]+)([\s\S]*)/.source));
+const GROUP_REGEX = new RegExp(String(/^([\s\S ]*?)(~[-a-z_]+\/[-a-z0-9]+)([\s\S]*)/.source));
 
 const convertToGroupRef = group => `web+urbitgraph://group/${group}`;
 
@@ -33,9 +33,10 @@ const raceRegexes = (str) => {
       content = { url: link[2] };
     }
   }
-  if(groupRef && groupRef[1].length < pfix?.length) {
+  const perma = parsePermalink(convertToGroupRef(groupRef?.[2]));
+  const [,,host] = perma?.group.split('/') ?? [];
+  if(groupRef && groupRef[1].length < pfix?.length && Boolean(perma) && urbitOb.isValidPatp(host)) {
     pfix = groupRef[1];
-    const perma = parsePermalink(convertToGroupRef(groupRef[2]));
     content = permalinkToReference(perma);
     sfix = groupRef[3];
   }
diff --git a/pkg/interface/src/logic/lib/tokenizeMessage.test.js b/pkg/interface/src/logic/lib/tokenizeMessage.test.js
index 835c9e71b..e65f139d1 100644
--- a/pkg/interface/src/logic/lib/tokenizeMessage.test.js
+++ b/pkg/interface/src/logic/lib/tokenizeMessage.test.js
@@ -113,4 +113,19 @@ describe('tokenizeMessage', () => {
     expect(text).toBe('. foo');
     expect(url).toBe('https://tlon.io/test');
   });
+
+  it('should ignore malformed group links', () => {
+    const example = 'test ~zoid/fakegroup';
+    const [{ text }, ...rest] = tokenizeMessage(example);
+    expect(text).toBe(example);
+    expect(rest.length).toBe(0);
+  });
+  it('should handle groups with numbers', () => {
+    const example = 'oh no, ~sampel/group-123-abc';
+
+    const [{ text }, { reference }] = tokenizeMessage(example);
+    expect(text).toBe('oh no, ');
+    expect(reference.group).toBe('/ship/~sampel/group-123-abc');
+  });
 });
+
diff --git a/pkg/interface/src/logic/state/embed.tsx b/pkg/interface/src/logic/state/embed.tsx
index 4911d00a0..3edd9bbb6 100644
--- a/pkg/interface/src/logic/state/embed.tsx
+++ b/pkg/interface/src/logic/state/embed.tsx
@@ -11,7 +11,7 @@ export interface EmbedState {
   fetch: (url: string) => Promise<any>;
 }
 
-const OEMBED_PROVIDER = 'http://noembed.com/embed';
+const OEMBED_PROVIDER = 'https://noembed.com/embed';
 
 const useEmbedState = create<EmbedState>((set, get) => ({
   embeds: {},
diff --git a/pkg/interface/src/logic/state/local.tsx b/pkg/interface/src/logic/state/local.tsx
index 9b6064106..c9a97304e 100644
--- a/pkg/interface/src/logic/state/local.tsx
+++ b/pkg/interface/src/logic/state/local.tsx
@@ -26,6 +26,7 @@ export interface LocalState {
   setTutorialRef: (el: HTMLElement | null) => void;
   dark: boolean;
   mobile: boolean;
+  mdBreak: boolean;
   background: BackgroundConfig;
   omniboxShown: boolean;
   suspendedFocus?: HTMLElement;
@@ -45,6 +46,7 @@ export const selectLocalState =
 const useLocalState = create<LocalStateZus>(persist((set, get) => ({
   dark: false,
   mobile: false,
+  mdBreak: false,
   background: undefined,
   theme: 'auto',
   hideAvatars: false,
diff --git a/pkg/interface/src/stories/LinkBlockItem.stories.tsx b/pkg/interface/src/stories/LinkBlockItem.stories.tsx
index b3178109d..927712e17 100644
--- a/pkg/interface/src/stories/LinkBlockItem.stories.tsx
+++ b/pkg/interface/src/stories/LinkBlockItem.stories.tsx
@@ -22,6 +22,7 @@ export const Image = () => (
   <Row flexWrap="wrap" m="2" width="700px" backgroundColor="white">
     <LinkBlockItem
       summary
+      size="250px"
       m="2"
       node={createLink(
         'Gas',
@@ -30,6 +31,7 @@ export const Image = () => (
     />
     <LinkBlockItem
       summary
+      size="250px"
       m="2"
       node={createLink(
         'Ocean',
@@ -57,10 +59,8 @@ Image.parameters = {
 
 export const Fallback = () => (
   <Col gapY="2" p="2" width="500px" backgroundColor="white">
-    <LinkBlockItem
-      node={createLink('', 'https://www.are.na/edouard-urcades/edouard')}
-    />
-    <LinkBlockItem node={createLink('', 'https://thejaymo.net')} />
+    <LinkBlockItem size="250px" node={createLink('', 'https://www.are.na/edouard-urcades/edouard')} />
+    <LinkBlockItem size="250px" node={createLink('', 'https://thejaymo.net')} />
   </Col>
 );
 
@@ -75,6 +75,7 @@ Fallback.parameters = {
 export const Audio = () => (
   <Col gapY="2" p="2" width="500px" backgroundColor="white">
     <LinkBlockItem
+      size="250px"
       node={createLink(
         'Artist · Track',
         'https://rovnys-public.s3.amazonaws.com/urbit-from-the-outside-in-1.m4a'
@@ -94,12 +95,14 @@ Audio.parameters = {
 export const Youtube = () => (
   <Col gapY="2" p="2" width="500px" backgroundColor="white">
     <LinkBlockItem
+      size="400px"
       node={createLink(
         'Artist · Track',
         'https://www.youtube.com/watch?v=M04AKTCDavc&t=1s'
       )}
     />
     <LinkBlockItem
+      size="250px"
       summary
       node={createLink(
         'Artist · Track',
diff --git a/pkg/interface/src/stories/LinkDetail.stories.tsx b/pkg/interface/src/stories/LinkDetail.stories.tsx
index 711ab9282..c2a52fe3d 100644
--- a/pkg/interface/src/stories/LinkDetail.stories.tsx
+++ b/pkg/interface/src/stories/LinkDetail.stories.tsx
@@ -8,7 +8,8 @@ import BigIntOrderedMap from '@urbit/api/lib/BigIntOrderedMap';
 import { GraphNode } from '@urbit/api';
 import useMetadataState from '~/logic/state/metadata';
 import { makeComment } from '~/logic/lib/fixtures';
-import moment from 'moment';
+
+const HOUR = 60*60 * 1000;
 
 export default {
   title: 'Collections/LinkDetail',
@@ -35,20 +36,57 @@ const node = {
   children: new BigIntOrderedMap<GraphNode>().gas([
     makeComment(
       'ridlur-figbud',
-      moment().hour(12).minute(34).valueOf(),
+      Date.now() - 4*HOUR,
       nodeIndex,
       [{ text: 'Beautiful' }]
     ),
     makeComment(
       'roslet-tanner',
-      moment().hour(12).minute(34).valueOf(),
+      Date.now() - 3*HOUR,
       nodeIndex,
       [{ text: 'where did you find this?' }]
     ),
 
     makeComment(
       'fabled-faster',
-      moment().hour(12).minute(34).valueOf(),
+      Date.now() - 2*HOUR,
+      nodeIndex,
+      [{ text: 'I dont\'t remember lol' }]
+    )
+  ])
+};
+
+const twitterNode = {
+  post: {
+    index: '/170141184504850861030994857749504231212',
+    author: 'fabled-faster',
+    'time-sent': 1609969377513,
+    signatures: [],
+    contents: [
+      { text: 'LindyMan' },
+      {
+        url: 'https://twitter.com/PaulSkallas/status/1388896550198317056'
+      }
+    ],
+    hash: null
+  },
+  children: new BigIntOrderedMap<GraphNode>().gas([
+    makeComment(
+      'ridlur-figbud',
+      Date.now() - 4*HOUR,
+      nodeIndex,
+      [{ text: 'Beautiful' }]
+    ),
+    makeComment(
+      'roslet-tanner',
+      Date.now() - 3*HOUR,
+      nodeIndex,
+      [{ text: 'where did you find this?' }]
+    ),
+
+    makeComment(
+      'fabled-faster',
+      Date.now() - 2*HOUR,
       nodeIndex,
       [{ text: 'I dont\'t remember lol' }]
     )
@@ -60,7 +98,7 @@ export const Image = () => {
     s => s.associations.graph['/ship/~bitbet-bolbel/links']
   );
   return (
-    <Box width="1166px" p="1" backgroundColor="white">
+    <Box width="100%" height="100%" p="1" backgroundColor="white">
       <LinkDetail
         baseUrl="/"
         node={node}
@@ -69,6 +107,21 @@ export const Image = () => {
     </Box>
   );
 };
+
+export const Twitter = () => {
+  const association = useMetadataState(
+    s => s.associations.graph['/ship/~bitbet-bolbel/links']
+  );
+  return (
+    <Box height="100%" width="100%" border="1" borderColor="lightGray" maxWidth="1166px" backgroundColor="white">
+      <LinkDetail
+        baseUrl="/"
+        node={twitterNode}
+        association={association}
+      />
+    </Box>
+  );
+};
 Image.parameters = {
   design: {
     type: 'figma',
diff --git a/pkg/interface/src/views/App.js b/pkg/interface/src/views/App.js
index 7c8f028af..e60542773 100644
--- a/pkg/interface/src/views/App.js
+++ b/pkg/interface/src/views/App.js
@@ -83,15 +83,20 @@ class App extends React.Component {
     bootstrapApi();
     this.props.getShallowChildren(`~${window.ship}`, 'dm-inbox');
     const theme = this.getTheme();
-    this.themeWatcher = window.matchMedia('(prefers-color-scheme: dark)');
-    this.mobileWatcher = window.matchMedia(`(max-width: ${theme.breakpoints[0]})`);
-    this.themeWatcher.onchange = this.updateTheme;
-    this.mobileWatcher.onchange = this.updateMobile;
     setTimeout(() => {
       // Something about how the store works doesn't like changing it
       // before the app has actually rendered, hence the timeout.
+      this.themeWatcher = window.matchMedia('(prefers-color-scheme: dark)');
+      this.mobileWatcher = window.matchMedia(`(max-width: ${theme.breakpoints[0]})`);
+      this.mediumWatcher = window.matchMedia(`(max-width: ${theme.breakpoints[1]})`);
+      // TODO: addListener is deprecated, but safari 13 requires it
+      this.themeWatcher.addListener(this.updateTheme);
+      this.mobileWatcher.addListener(this.updateMobile);
+      this.mediumWatcher.addListener(this.updateMedium);
+
       this.updateMobile(this.mobileWatcher);
       this.updateTheme(this.themeWatcher);
+      this.updateMedium(this.mediumWatcher);
     }, 500);
     this.props.getBaseHash();
     this.props.getRuntimeLag();  // TODO  consider polling periodically
@@ -105,8 +110,9 @@ class App extends React.Component {
   }
 
   componentWillUnmount() {
-    this.themeWatcher.onchange = undefined;
-    this.mobileWatcher.onchange = undefined;
+    this.themeWatcher.removeListener(this.updateTheme);
+    this.mobileWatcher.removeListener(this.updateMobile);
+    this.mediumWatcher.removeListener(this.updateMedium);
   }
 
   updateTheme(e) {
@@ -121,6 +127,12 @@ class App extends React.Component {
     });
   }
 
+  updateMedium = (e) => {
+    this.props.set((state) => {
+      state.mdBreak = e.matches;
+    });
+  }
+
   getTheme() {
     const { props } = this;
     return ((props.dark && props?.display?.theme == 'auto') ||
diff --git a/pkg/interface/src/views/apps/chat/DmResource.tsx b/pkg/interface/src/views/apps/chat/DmResource.tsx
index c3d447646..be71dfd4d 100644
--- a/pkg/interface/src/views/apps/chat/DmResource.tsx
+++ b/pkg/interface/src/views/apps/chat/DmResource.tsx
@@ -84,7 +84,7 @@ export function DmResource(props: DmResourceProps) {
       if (newer) {
         const index = dm.peekLargest()?.[0];
         if (!index) {
-          return true;
+          return false;
         }
         await getYoungerSiblings(
           `~${window.ship}`,
@@ -96,7 +96,7 @@ export function DmResource(props: DmResourceProps) {
       } else {
         const index = dm.peekSmallest()?.[0];
         if (!index) {
-          return true;
+          return false;
         }
         await getOlderSiblings(
           `~${window.ship}`,
diff --git a/pkg/interface/src/views/apps/links/components/LinkBlocks.tsx b/pkg/interface/src/views/apps/links/components/LinkBlocks.tsx
index 755168967..a378298bf 100644
--- a/pkg/interface/src/views/apps/links/components/LinkBlocks.tsx
+++ b/pkg/interface/src/views/apps/links/components/LinkBlocks.tsx
@@ -32,7 +32,7 @@ export function LinkBlocks(props: LinkBlocksProps) {
   const [linkSize, setLinkSize] = useState(250);
   const linkSizePx = `${linkSize}px`;
 
-  const isMobile = useLocalState(s => s.mobile);
+  const isMobile = useLocalState(s => s.mobile || s.mdBreak);
   const colCount = useMemo(() => (isMobile ? 2 : 4), [isMobile]);
   const bind = useResize<HTMLDivElement>(
     useCallback(
@@ -46,12 +46,13 @@ export function LinkBlocks(props: LinkBlocksProps) {
   );
 
   useEffect(() => {
-    const unreads = useHarkState.getState()
-      .unreads.graph?.[association.resource]?.['/']?.unreads || new Set<string>();
-    Array.from((unreads as Set<string>)).forEach((u) => {
+    const unreads =
+      useHarkState.getState().unreads.graph?.[association.resource]?.['/']
+        ?.unreads || new Set<string>();
+    Array.from(unreads as Set<string>).forEach((u) => {
       airlock.poke(markEachAsRead(association.resource, '/', u));
     });
-}, [association.resource]);
+  }, [association.resource]);
 
   const orm = useMemo(() => {
     const nodes = [null, ...Array.from(props.graph)];
@@ -62,12 +63,12 @@ export function LinkBlocks(props: LinkBlocksProps) {
         return [bigInt(i), chunk];
       })
     );
-  }, [props.graph]);
+  }, [props.graph, colCount]);
 
   const renderItem = useCallback(
     React.forwardRef<any, any>(({ index }, ref) => {
-      const chunk = orm.get(index);
-      const space = [3,4];
+      const chunk = orm.get(index) ?? [];
+      const space = [3, 3, 4];
 
       return (
         <Row
@@ -82,10 +83,7 @@ export function LinkBlocks(props: LinkBlocksProps) {
           {chunk.map((block) => {
             if (!block) {
               return (
-                <LinkBlockInput
-                  size={linkSizePx}
-                  association={association}
-                />
+                <LinkBlockInput size={linkSizePx} association={association} />
               );
             }
             const [i, node] = block;
@@ -115,7 +113,13 @@ export function LinkBlocks(props: LinkBlocksProps) {
   );
 
   return (
-    <Col overflowX="hidden" overflowY="auto" height="calc(100% - 48px)" {...bind}>
+    <Col
+      width="100%"
+      overflowX="hidden"
+      overflowY="auto"
+      height="calc(100% - 48px)"
+      {...bind}
+    >
       <BlockScroller
         origin="top"
         offset={0}
diff --git a/pkg/interface/src/views/apps/links/components/LinkDetail.tsx b/pkg/interface/src/views/apps/links/components/LinkDetail.tsx
index d6640ef53..539ec0d9b 100644
--- a/pkg/interface/src/views/apps/links/components/LinkDetail.tsx
+++ b/pkg/interface/src/views/apps/links/components/LinkDetail.tsx
@@ -21,7 +21,7 @@ export function LinkDetail(props: LinkDetailProps) {
   return (
     /*  @ts-ignore indio props?? */
     <Row height="100%" width="100%" flexDirection={['column', 'column', 'row']} {...rest}>
-      <LinkBlockItem minWidth="0" minHeight="0" maxHeight={['50%', '50%', '100%']} maxWidth={['100%', '100%', 'calc(100% - 350px)']} flexGrow={1} border={0} node={node} />
+      <LinkBlockItem minWidth="0" minHeight="0" height={['50%', '50%', '100%']} width={['100%', '100%', 'calc(100% - 350px)']} flexGrow={0} border={0} node={node} />
       <Col
         minHeight="0"
         flexShrink={0}
diff --git a/pkg/interface/src/views/components/RemoteContent/embed.tsx b/pkg/interface/src/views/components/RemoteContent/embed.tsx
index d59e01b9b..e74943582 100644
--- a/pkg/interface/src/views/components/RemoteContent/embed.tsx
+++ b/pkg/interface/src/views/components/RemoteContent/embed.tsx
@@ -184,6 +184,7 @@ const EmbedBox = styled.div<{ aspect?: number; iHeight?: number; iWidth?: number
     width: max-content;
     height: max-content;
     max-height: 100%;
+    max-width: 100%;
     flex-grow: 1;
 
   ` : `
diff --git a/pkg/interface/src/views/components/leap/Omnibox.tsx b/pkg/interface/src/views/components/leap/Omnibox.tsx
index c2500bf70..363abcf48 100644
--- a/pkg/interface/src/views/components/leap/Omnibox.tsx
+++ b/pkg/interface/src/views/components/leap/Omnibox.tsx
@@ -1,6 +1,8 @@
 import { Box, Row, Text } from '@tlon/indigo-react';
 import { omit } from 'lodash';
 import Mousetrap from 'mousetrap';
+import _ from 'lodash';
+import f from 'lodash/fp';
 import React, {
   ReactElement, useCallback,
   useEffect, useMemo,
@@ -11,7 +13,7 @@ import React, {
 import { useHistory, useLocation } from 'react-router-dom';
 import * as ob from 'urbit-ob';
 import defaultApps from '~/logic/lib/default-apps';
-import makeIndex from '~/logic/lib/omnibox';
+import makeIndex, { OmniboxItem } from '~/logic/lib/omnibox';
 import { useOutsideClick } from '~/logic/lib/useOutsideClick';
 import { deSig } from '~/logic/lib/util';
 import useContactState from '~/logic/state/contact';
@@ -41,6 +43,7 @@ const SEARCHED_CATEGORIES = [
   'apps'
 ];
 const settingsSel = (s: SettingsState) => s.leap;
+const CAT_LIMIT = 6;
 
 export function Omnibox(props: OmniboxProps): ReactElement {
   const location = useLocation();
@@ -111,7 +114,7 @@ export function Omnibox(props: OmniboxProps): ReactElement {
   }, [props.show]);
 
   const initialResults = useMemo(() => {
-    return new Map(
+    return new Map<string, OmniboxItem[]>(
       SEARCHED_CATEGORIES.map((category) => {
         if (category === 'other') {
           return [
@@ -129,7 +132,7 @@ export function Omnibox(props: OmniboxProps): ReactElement {
       return initialResults;
     }
     const q = query.toLowerCase();
-    const resultsMap = new Map();
+    const resultsMap = new Map<string, OmniboxItem[]>();
     SEARCHED_CATEGORIES.map((category) => {
       const categoryIndex = index.get(category);
       resultsMap.set(
@@ -175,7 +178,7 @@ export function Omnibox(props: OmniboxProps): ReactElement {
   );
 
   const setPreviousSelected = useCallback(() => {
-    const flattenedResults = Array.from(results.values()).flat();
+    const flattenedResults = Array.from(results.values()).map(f.take(CAT_LIMIT)).flat();
     const totalLength = flattenedResults.length;
     if (selected.length) {
       const currentIndex = flattenedResults.indexOf(
@@ -198,7 +201,7 @@ export function Omnibox(props: OmniboxProps): ReactElement {
   }, [results, selected]);
 
   const setNextSelected = useCallback(() => {
-    const flattenedResults = Array.from(results.values()).flat();
+    const flattenedResults = Array.from(results.values()).map(f.take(CAT_LIMIT)).flat();
     if (selected.length) {
       const currentIndex = flattenedResults.indexOf(
         // @ts-ignore unclear how to give this spread a return signature
@@ -309,13 +312,15 @@ export function Omnibox(props: OmniboxProps): ReactElement {
     return (
       <Box
         maxHeight={['200px', '400px']}
-        overflowY='auto'
-        overflowX='hidden'
+        overflow='hidden'
         borderBottomLeftRadius={2}
         borderBottomRightRadius={2}
       >
         {SEARCHED_CATEGORIES.map(category =>
-          Object({ category, categoryResults: results.get(category) })
+          ({
+            category,
+            categoryResults: _.take(results.get(category).sort(sortResults), CAT_LIMIT)
+          })
         )
           .filter(category => category.categoryResults.length > 0)
           .map(({ category, categoryResults }, i) => {
@@ -331,7 +336,7 @@ export function Omnibox(props: OmniboxProps): ReactElement {
             return (
               <Box key={i} width='max(50vw, 300px)' maxWidth='700px'>
                 {categoryTitle}
-                {categoryResults.sort(sortResults).map((result, i2) => (
+                {categoryResults.map((result, i2) => (
                   <OmniboxResult
                     key={i2}
                     // @ts-ignore withHovering doesn't pass props