diff --git a/src/GroupAddressPicker.js b/src/GroupAddressPicker.js
index 595f0cfe46..c4b3744575 100644
--- a/src/GroupAddressPicker.js
+++ b/src/GroupAddressPicker.js
@@ -49,20 +49,26 @@ export function showGroupInviteDialog(groupId) {
 
 export function showGroupAddRoomDialog(groupId) {
     return new Promise((resolve, reject) => {
+        let addRoomsPublicly = false;
+        const onCheckboxClicked = (e) => {
+            addRoomsPublicly = e.target.checked;
+        };
         const description = <div>
             <div>{ _t("Which rooms would you like to add to this community?") }</div>
-            <div className="warning">
-                { _t(
-                    "Warning: any room you add to a community will be publicly "+
-                    "visible to anyone who knows the community ID",
-                ) }
-            </div>
         </div>;
 
+        const checkboxContainer = <label className="mx_GroupAddressPicker_checkboxContainer">
+            <input type="checkbox" onClick={onCheckboxClicked} />
+            <div>
+                { _t("Show these rooms to non-members on the community page and room list?") }
+            </div>
+        </label>;
+
         const AddressPickerDialog = sdk.getComponent("dialogs.AddressPickerDialog");
         Modal.createTrackedDialog('Add Rooms to Group', '', AddressPickerDialog, {
             title: _t("Add rooms to the community"),
             description: description,
+            extraNode: checkboxContainer,
             placeholder: _t("Room name or alias"),
             button: _t("Add to community"),
             pickerType: 'room',
@@ -70,7 +76,7 @@ export function showGroupAddRoomDialog(groupId) {
             onFinished: (success, addrs) => {
                 if (!success) return;
 
-                _onGroupAddRoomFinished(groupId, addrs).then(resolve, reject);
+                _onGroupAddRoomFinished(groupId, addrs, addRoomsPublicly).then(resolve, reject);
             },
         });
     });
@@ -106,13 +112,13 @@ function _onGroupInviteFinished(groupId, addrs) {
     });
 }
 
-function _onGroupAddRoomFinished(groupId, addrs) {
+function _onGroupAddRoomFinished(groupId, addrs, addRoomsPublicly) {
     const matrixClient = MatrixClientPeg.get();
     const groupStore = GroupStoreCache.getGroupStore(matrixClient, groupId);
     const errorList = [];
     return Promise.all(addrs.map((addr) => {
         return groupStore
-            .addRoomToGroup(addr.address)
+            .addRoomToGroup(addr.address, addRoomsPublicly)
             .catch(() => { errorList.push(addr.address); })
             .then(() => {
                 const roomId = addr.address;
diff --git a/src/UnknownDeviceErrorHandler.js b/src/UnknownDeviceErrorHandler.js
index 664fe14eb5..e7d77b3b66 100644
--- a/src/UnknownDeviceErrorHandler.js
+++ b/src/UnknownDeviceErrorHandler.js
@@ -25,6 +25,7 @@ const onAction = function(payload) {
         const UnknownDeviceDialog = sdk.getComponent('dialogs.UnknownDeviceDialog');
         isDialogOpen = true;
         Modal.createTrackedDialog('Unknown Device Error', '', UnknownDeviceDialog, {
+            devices: payload.err.devices,
             room: payload.room,
             onFinished: (r) => {
                 isDialogOpen = false;
diff --git a/src/components/structures/GroupView.js b/src/components/structures/GroupView.js
index 647ffee37a..caa5e7cb01 100644
--- a/src/components/structures/GroupView.js
+++ b/src/components/structures/GroupView.js
@@ -430,6 +430,7 @@ export default React.createClass({
             uploadingAvatar: false,
             membershipBusy: false,
             publicityBusy: false,
+            inviterProfile: null,
         };
     },
 
@@ -463,6 +464,10 @@ export default React.createClass({
     },
 
     _initGroupStore: function(groupId, firstInit) {
+        const group = MatrixClientPeg.get().getGroup(groupId);
+        if (group && group.inviter && group.inviter.userId) {
+            this._fetchInviterProfile(group.inviter.userId);
+        }
         this._groupStore = GroupStoreCache.getGroupStore(MatrixClientPeg.get(), groupId);
         this._groupStore.registerListener(() => {
             const summary = this._groupStore.getSummary();
@@ -497,6 +502,26 @@ export default React.createClass({
         });
     },
 
+    _fetchInviterProfile(userId) {
+        this.setState({
+            inviterProfileBusy: true,
+        });
+        MatrixClientPeg.get().getProfileInfo(userId).then((resp) => {
+            this.setState({
+                inviterProfile: {
+                    avatarUrl: resp.avatar_url,
+                    displayName: resp.displayname,
+                },
+            });
+        }).catch((e) => {
+            console.error('Error getting group inviter profile', e);
+        }).finally(() => {
+            this.setState({
+                inviterProfileBusy: false,
+            });
+        });
+    },
+
     _onShowRhsClick: function(ev) {
         dis.dispatch({ action: 'show_right_panel' });
     },
@@ -591,7 +616,7 @@ export default React.createClass({
 
     _onAcceptInviteClick: function() {
         this.setState({membershipBusy: true});
-        MatrixClientPeg.get().acceptGroupInvite(this.props.groupId).then(() => {
+        this._groupStore.acceptGroupInvite().then(() => {
             // don't reset membershipBusy here: wait for the membership change to come down the sync
         }).catch((e) => {
             this.setState({membershipBusy: false});
@@ -802,20 +827,37 @@ export default React.createClass({
 
     _getMembershipSection: function() {
         const Spinner = sdk.getComponent("elements.Spinner");
+        const BaseAvatar = sdk.getComponent("avatars.BaseAvatar");
 
         const group = MatrixClientPeg.get().getGroup(this.props.groupId);
         if (!group) return null;
 
         if (group.myMembership === 'invite') {
-            if (this.state.membershipBusy) {
+            if (this.state.membershipBusy || this.state.inviterProfileBusy) {
                 return <div className="mx_GroupView_membershipSection">
                     <Spinner />
                 </div>;
             }
+            const httpInviterAvatar = this.state.inviterProfile ?
+                MatrixClientPeg.get().mxcUrlToHttp(
+                    this.state.inviterProfile.avatarUrl, 36, 36,
+                ) : null;
+
+            let inviterName = group.inviter.userId;
+            if (this.state.inviterProfile) {
+                inviterName = this.state.inviterProfile.displayName || group.inviter.userId;
+            }
             return <div className="mx_GroupView_membershipSection mx_GroupView_membershipSection_invited">
                 <div className="mx_GroupView_membershipSubSection">
                     <div className="mx_GroupView_membershipSection_description">
-                        { _t("%(inviter)s has invited you to join this community", {inviter: group.inviter.userId}) }
+                        <BaseAvatar url={httpInviterAvatar}
+                            name={inviterName}
+                            width={36}
+                            height={36}
+                        />
+                        { _t("%(inviter)s has invited you to join this community", {
+                            inviter: inviterName,
+                        }) }
                     </div>
                     <div className="mx_GroupView_membership_buttonContainer">
                         <AccessibleButton className="mx_GroupView_textButton mx_RoomHeader_textButton"
diff --git a/src/components/views/dialogs/AddressPickerDialog.js b/src/components/views/dialogs/AddressPickerDialog.js
index 5796e60cc9..bb9f300f9d 100644
--- a/src/components/views/dialogs/AddressPickerDialog.js
+++ b/src/components/views/dialogs/AddressPickerDialog.js
@@ -34,6 +34,8 @@ module.exports = React.createClass({
     propTypes: {
         title: PropTypes.string.isRequired,
         description: PropTypes.node,
+        // Extra node inserted after picker input, dropdown and errors
+        extraNode: PropTypes.node,
         value: PropTypes.string,
         placeholder: PropTypes.string,
         roomId: PropTypes.string,
@@ -268,34 +270,53 @@ module.exports = React.createClass({
         const rooms = MatrixClientPeg.get().getRooms();
         const results = [];
         rooms.forEach((room) => {
+            let rank = Infinity;
             const nameEvent = room.currentState.getStateEvents('m.room.name', '');
-            const topicEvent = room.currentState.getStateEvents('m.room.topic', '');
             const name = nameEvent ? nameEvent.getContent().name : '';
             const canonicalAlias = room.getCanonicalAlias();
             const aliasEvents = room.currentState.getStateEvents('m.room.aliases');
             const aliases = aliasEvents.map((ev) => ev.getContent().aliases).reduce((a, b) => {
                 return a.concat(b);
             }, []);
-            const topic = topicEvent ? topicEvent.getContent().topic : '';
 
             const nameMatch = (name || '').toLowerCase().includes(lowerCaseQuery);
-            const aliasMatch = aliases.some((alias) =>
-                (alias || '').toLowerCase().includes(lowerCaseQuery),
-            );
-            const topicMatch = (topic || '').toLowerCase().includes(lowerCaseQuery);
-            if (!(nameMatch || topicMatch || aliasMatch)) {
+            let aliasMatch = false;
+            let shortestMatchingAliasLength = Infinity;
+            aliases.forEach((alias) => {
+                if ((alias || '').toLowerCase().includes(lowerCaseQuery)) {
+                    aliasMatch = true;
+                    if (shortestMatchingAliasLength > alias.length) {
+                        shortestMatchingAliasLength = alias.length;
+                    }
+                }
+            });
+
+            if (!(nameMatch || aliasMatch)) {
                 return;
             }
+
+            if (aliasMatch) {
+                // A shorter matching alias will give a better rank
+                rank = shortestMatchingAliasLength;
+            }
+
             const avatarEvent = room.currentState.getStateEvents('m.room.avatar', '');
             const avatarUrl = avatarEvent ? avatarEvent.getContent().url : undefined;
 
             results.push({
+                rank,
                 room_id: room.roomId,
                 avatar_url: avatarUrl,
                 name: name || canonicalAlias || aliases[0] || _t('Unnamed Room'),
             });
         });
-        this._processResults(results, query);
+
+        // Sort by rank ascending (a high rank being less relevant)
+        const sortedResults = results.sort((a, b) => {
+            return a.rank - b.rank;
+        });
+
+        this._processResults(sortedResults, query);
         this.setState({
             busy: false,
         });
@@ -574,6 +595,7 @@ module.exports = React.createClass({
                     <div className="mx_ChatInviteDialog_inputContainer">{ query }</div>
                     { error }
                     { addressSelector }
+                    { this.props.extraNode }
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button className="mx_Dialog_primary" onClick={this.onButtonClick}>
diff --git a/src/components/views/dialogs/UnknownDeviceDialog.js b/src/components/views/dialogs/UnknownDeviceDialog.js
index 09c4cc2411..cd6e4a3403 100644
--- a/src/components/views/dialogs/UnknownDeviceDialog.js
+++ b/src/components/views/dialogs/UnknownDeviceDialog.js
@@ -49,9 +49,8 @@ function UserUnknownDeviceList(props) {
     const {userId, userDevices} = props;
 
     const deviceListEntries = Object.keys(userDevices).map((deviceId) =>
-        <DeviceListEntry key={deviceId} userId={userId}
-            device={userDevices[deviceId]}
-        />,
+       <DeviceListEntry key={deviceId} userId={userId}
+           device={userDevices[deviceId]} />,
     );
 
     return (
@@ -94,52 +93,23 @@ export default React.createClass({
     propTypes: {
         room: React.PropTypes.object.isRequired,
 
+        // map from userid -> deviceid -> deviceinfo
+        devices: React.PropTypes.object.isRequired,
         onFinished: React.PropTypes.func.isRequired,
     },
 
-    componentWillMount: function() {
-        this._unmounted = false;
-
-        const roomMembers = this.props.room.getJoinedMembers().map((m) => {
-            return m.userId;
-        });
-
-        this.setState({
-            // map from userid -> deviceid -> deviceinfo
-            devices: null,
-        });
-        MatrixClientPeg.get().downloadKeys(roomMembers, false).then((devices) => {
-            if (this._unmounted) return;
-
-            const unknownDevices = {};
-            // This is all devices in this room, so find the unknown ones.
-            Object.keys(devices).forEach((userId) => {
-                Object.keys(devices[userId]).map((deviceId) => {
-                    const device = devices[userId][deviceId];
-
-                    if (device.isUnverified() && !device.isKnown()) {
-                        if (unknownDevices[userId] === undefined) {
-                            unknownDevices[userId] = {};
-                        }
-                        unknownDevices[userId][deviceId] = device;
-                    }
-
-                    // Given we've now shown the user the unknown device, it is no longer
-                    // unknown to them. Therefore mark it as 'known'.
-                    if (!device.isKnown()) {
-                        MatrixClientPeg.get().setDeviceKnown(userId, deviceId, true);
-                    }
-                });
-            });
-
-            this.setState({
-                devices: unknownDevices,
+    componentDidMount: function() {
+        // Given we've now shown the user the unknown device, it is no longer
+        // unknown to them. Therefore mark it as 'known'.
+        Object.keys(this.props.devices).forEach((userId) => {
+            Object.keys(this.props.devices[userId]).map((deviceId) => {
+                MatrixClientPeg.get().setDeviceKnown(userId, deviceId, true);
             });
         });
-    },
 
-    componentWillUnmount: function() {
-        this._unmounted = true;
+        // XXX: temporary logging to try to diagnose
+        // https://github.com/vector-im/riot-web/issues/3148
+        console.log('Opening UnknownDeviceDialog');
     },
 
     render: function() {
@@ -186,7 +156,7 @@ export default React.createClass({
                     { warning }
                     { _t("Unknown devices") }:
 
-                    <UnknownDeviceList devices={this.state.devices} />
+                    <UnknownDeviceList devices={this.props.devices} />
                 </GeminiScrollbar>
                 <div className="mx_Dialog_buttons">
                     <button className="mx_Dialog_primary" autoFocus={true}
diff --git a/src/components/views/groups/GroupMemberList.js b/src/components/views/groups/GroupMemberList.js
index 8658ac19a5..063051625f 100644
--- a/src/components/views/groups/GroupMemberList.js
+++ b/src/components/views/groups/GroupMemberList.js
@@ -108,14 +108,20 @@ export default withMatrixClient(React.createClass({
             if (!uniqueMembers[m.userId]) uniqueMembers[m.userId] = m;
         });
         memberList = Object.keys(uniqueMembers).map((userId) => uniqueMembers[userId]);
+        // Descending sort on isPrivileged = true = 1 to isPrivileged = false = 0
         memberList.sort((a, b) => {
-            // TODO: should put admins at the top: we don't yet have that info
-            if (a < b) {
-                return -1;
-            } else if (a > b) {
-                return 1;
+            if (a.isPrivileged === b.isPrivileged) {
+                const aName = a.displayname || a.userId;
+                const bName = b.displayname || b.userId;
+                if (aName < bName) {
+                    return -1;
+                } else if (aName > bName) {
+                    return 1;
+                } else {
+                    return 0;
+                }
             } else {
-                return 0;
+                return a.isPrivileged ? -1 : 1;
             }
         });
 
diff --git a/src/components/views/groups/GroupMemberTile.js b/src/components/views/groups/GroupMemberTile.js
index 84c2adcb41..f967a33f46 100644
--- a/src/components/views/groups/GroupMemberTile.js
+++ b/src/components/views/groups/GroupMemberTile.js
@@ -63,7 +63,7 @@ export default withMatrixClient(React.createClass({
         return (
             <EntityTile name={name} avatarJsx={av} onClick={this.onClick}
                 suppressOnHover={true} presenceState="online"
-                powerStatus={this.props.member.isAdmin ? EntityTile.POWER_STATUS_ADMIN : null}
+                powerStatus={this.props.member.isPrivileged ? EntityTile.POWER_STATUS_ADMIN : null}
             />
         );
     },
diff --git a/src/components/views/groups/GroupRoomList.js b/src/components/views/groups/GroupRoomList.js
index aeded2dfb0..ff27d093b2 100644
--- a/src/components/views/groups/GroupRoomList.js
+++ b/src/components/views/groups/GroupRoomList.js
@@ -94,7 +94,7 @@ export default React.createClass({
         let roomList = this.state.rooms;
         if (query) {
             roomList = roomList.filter((room) => {
-                const matchesName = (room.name || "").toLowerCase().include(query);
+                const matchesName = (room.name || "").toLowerCase().includes(query);
                 const matchesAlias = (room.canonicalAlias || "").toLowerCase().includes(query);
                 return matchesName || matchesAlias;
             });
diff --git a/src/groups.js b/src/groups.js
index 957db1d85b..860cf71fff 100644
--- a/src/groups.js
+++ b/src/groups.js
@@ -36,7 +36,7 @@ export function groupMemberFromApiObject(apiObject) {
         userId: apiObject.user_id,
         displayname: apiObject.displayname,
         avatarUrl: apiObject.avatar_url,
-        isAdmin: apiObject.is_admin,
+        isPrivileged: apiObject.is_privileged,
     };
 }
 
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index b94e89a113..c3ba45e82c 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -49,7 +49,7 @@
     "Name or matrix ID": "Name or matrix ID",
     "Invite to Community": "Invite to Community",
     "Which rooms would you like to add to this community?": "Which rooms would you like to add to this community?",
-    "Warning: any room you add to a community will be publicly visible to anyone who knows the community ID": "Warning: any room you add to a community will be publicly visible to anyone who knows the community ID",
+    "Show these rooms to non-members on the community page and room list?": "Show these rooms to non-members on the community page and room list?",
     "Add rooms to the community": "Add rooms to the community",
     "Room name or alias": "Room name or alias",
     "Add to community": "Add to community",
diff --git a/src/stores/FlairStore.js b/src/stores/FlairStore.js
index 1d20148c0d..0f339eaf63 100644
--- a/src/stores/FlairStore.js
+++ b/src/stores/FlairStore.js
@@ -69,9 +69,13 @@ class FlairStore extends EventEmitter {
         }
 
         // Bulk lookup ongoing, return promise to resolve/reject
-        if (this._usersPending[userId] || this._usersInFlight[userId]) {
+        if (this._usersPending[userId]) {
             return this._usersPending[userId].prom;
         }
+        // User has been moved from pending to in-flight
+        if (this._usersInFlight[userId]) {
+            return this._usersInFlight[userId].prom;
+        }
 
         this._usersPending[userId] = {};
         this._usersPending[userId].prom = new Promise((resolve, reject) => {
diff --git a/src/stores/GroupStore.js b/src/stores/GroupStore.js
index 11dd664053..fdd776f74d 100644
--- a/src/stores/GroupStore.js
+++ b/src/stores/GroupStore.js
@@ -169,6 +169,14 @@ export default class GroupStore extends EventEmitter {
             .then(this._fetchMembers.bind(this));
     }
 
+    acceptGroupInvite() {
+        return this._matrixClient.acceptGroupInvite(this.groupId)
+            // The user might be able to see more rooms now
+            .then(this._fetchRooms.bind(this))
+            // The user should now appear as a member
+            .then(this._fetchMembers.bind(this));
+    }
+
     addRoomToGroupSummary(roomId, categoryId) {
         return this._matrixClient
             .addRoomToGroupSummary(this.groupId, roomId, categoryId)