diff --git a/jsfiddles/event_stream/demo.css b/jsfiddles/event_stream/demo.css
new file mode 100644
index 0000000000..48a55f372d
--- /dev/null
+++ b/jsfiddles/event_stream/demo.css
@@ -0,0 +1,17 @@
+.loggedin {
+    visibility: hidden;
+}
+
+p {
+    font-family: monospace;
+}
+
+table
+{
+    border-spacing:5px;
+}
+
+th,td
+{
+    padding:5px;
+}
diff --git a/jsfiddles/event_stream/demo.html b/jsfiddles/event_stream/demo.html
new file mode 100644
index 0000000000..ee4fc3ea68
--- /dev/null
+++ b/jsfiddles/event_stream/demo.html
@@ -0,0 +1,23 @@
+<div>
+    <p>This event stream demo requires a home server to be running on http://localhost:8080</p>
+</div>
+<form class="loginForm">
+    <input type="text" id="userLogin" placeholder="Username"></input>
+    <input type="password" id="passwordLogin" placeholder="Password"></input>
+    <input type="button" class="login" value="Login"></input>
+</form>
+<div class="loggedin">
+    <form class="sendMessageForm">
+        <input type="button" class="sendMessage" value="Send random message"></input>
+    </form>
+    <p id="streamErrorText"></p>
+    <table id="rooms">
+        <tbody>
+            <tr>
+                <th>Room ID</th>
+                <th>Latest message</th>
+            </tr>
+        </tbody>
+    </table>
+</div>
+    
diff --git a/jsfiddles/event_stream/demo.js b/jsfiddles/event_stream/demo.js
new file mode 100644
index 0000000000..b657b809e2
--- /dev/null
+++ b/jsfiddles/event_stream/demo.js
@@ -0,0 +1,142 @@
+var accountInfo = {};
+
+var eventStreamInfo = {
+    from: "END"
+};
+
+var roomInfo = [];
+
+var longpollEventStream = function() {
+    var url = "http://localhost:8080/matrix/client/api/v1/events?access_token=$token&from=$from";
+    url = url.replace("$token", accountInfo.access_token);
+    url = url.replace("$from", eventStreamInfo.from);
+    
+    $.getJSON(url, function(data) {
+        eventStreamInfo.from = data.end;
+        
+        var hasNewLatestMessage = false;
+        for (var i=0; i<data.chunk.length; ++i) {
+            if (data.chunk[i].type === "m.room.message") {
+                for (var j=0; j<roomInfo.length; ++j) {
+                    if (roomInfo[j].room_id === data.chunk[i].room_id) {
+                        roomInfo[j].latest_message = data.chunk[i].content.body;
+                        hasNewLatestMessage = true;
+                    }
+                }
+            }
+        }
+        
+        if (hasNewLatestMessage) {
+           setRooms(roomInfo);
+        }
+        $("#streamErrorText").text("");
+        longpollEventStream();
+    }).fail(function(err) {
+        $("#streamErrorText").text("Event stream error: "+JSON.stringify($.parseJSON(err.responseText)));
+        setTimeout(longpollEventStream, 5000);
+    });
+};
+
+var showLoggedIn = function(data) {
+    accountInfo = data;
+    longpollEventStream();
+    getCurrentRoomList();
+    $(".loggedin").css({visibility: "visible"});
+};
+
+$('.login').live('click', function() {
+    var user = $("#userLogin").val();
+    var password = $("#passwordLogin").val();
+    $.ajax({
+        url: "http://localhost:8080/matrix/client/api/v1/login",
+        type: "POST",
+        contentType: "application/json; charset=utf-8",
+        data: JSON.stringify({ user: user, password: password, type: "m.login.password" }),
+        dataType: "json",
+        success: function(data) {
+            $("#rooms").find("tr:gt(0)").remove();
+            showLoggedIn(data);
+        },
+        error: function(err) {
+            alert(JSON.stringify($.parseJSON(err.responseText)));  
+        }
+    }); 
+});
+
+var getCurrentRoomList = function() {
+    $("#roomId").val("");
+    var url = "http://localhost:8080/matrix/client/api/v1/im/sync?access_token=" + accountInfo.access_token + "&from=END&to=START&limit=1";
+    $.getJSON(url, function(data) {
+        for (var i=0; i<data.length; ++i) {
+            if ("messages" in data[i]) {
+                data[i].latest_message = data[i].messages.chunk[0].content.body;   
+            }
+        }
+        roomInfo = data;
+        setRooms(roomInfo);  
+    }).fail(function(err) {
+        alert(JSON.stringify($.parseJSON(err.responseText)));
+    });
+};
+
+$('.sendMessage').live('click', function() {
+    if (roomInfo.length === 0) {
+        alert("There is no room to send a message to!");
+        return;
+    }
+    
+    var index = Math.floor(Math.random() * roomInfo.length);
+    
+    sendMessage(roomInfo[index].room_id);
+});
+
+var sendMessage = function(roomId) {
+    var body = "jsfiddle message @" + $.now();
+    var msgId = $.now();
+    
+    if (roomId.length === 0) {
+        return;
+    }
+    
+    var url = "http://localhost:8080/matrix/client/api/v1/rooms/$roomid/messages/$user/$msgid?access_token=$token";
+    url = url.replace("$token", accountInfo.access_token);
+    url = url.replace("$roomid", encodeURIComponent(roomId));
+    url = url.replace("$user", encodeURIComponent(accountInfo.user_id));
+    url = url.replace("$msgid", msgId);
+    
+    var data = {
+        msgtype: "m.text",
+        body: body
+    };
+    
+    $.ajax({
+        url: url,
+        type: "PUT",
+        contentType: "application/json; charset=utf-8",
+        data: JSON.stringify(data),
+        dataType: "json",
+        success: function(data) {
+            $("#messageBody").val("");
+        },
+        error: function(err) {
+            alert(JSON.stringify($.parseJSON(err.responseText)));  
+        }
+    }); 
+};
+
+var setRooms = function(roomList) {
+    // wipe existing entries
+    $("#rooms").find("tr:gt(0)").remove();
+    
+    var rows = "";
+    for (var i=0; i<roomList.length; ++i) {
+        row = "<tr>" +
+            "<td>"+roomList[i].room_id+"</td>" +
+            "<td>"+roomList[i].latest_message+"</td>" +
+            "</tr>";  
+        rows += row;
+    }
+    
+    $("#rooms").append(rows);
+};
+
diff --git a/jsfiddles/room_memberships/demo.css b/jsfiddles/room_memberships/demo.css
new file mode 100644
index 0000000000..48a55f372d
--- /dev/null
+++ b/jsfiddles/room_memberships/demo.css
@@ -0,0 +1,17 @@
+.loggedin {
+    visibility: hidden;
+}
+
+p {
+    font-family: monospace;
+}
+
+table
+{
+    border-spacing:5px;
+}
+
+th,td
+{
+    padding:5px;
+}
diff --git a/jsfiddles/room_memberships/demo.html b/jsfiddles/room_memberships/demo.html
new file mode 100644
index 0000000000..96232e827a
--- /dev/null
+++ b/jsfiddles/room_memberships/demo.html
@@ -0,0 +1,37 @@
+<div>
+    <p>This room membership demo requires a home server to be running on http://localhost:8080</p>
+</div>
+<form class="loginForm">
+    <input type="text" id="userLogin" placeholder="Username"></input>
+    <input type="password" id="passwordLogin" placeholder="Password"></input>
+    <input type="button" class="login" value="Login"></input>
+</form>
+<div class="loggedin">
+    <form class="createRoomForm">
+        <input type="button" class="createRoom" value="Create Room"></input>
+    </form>
+    <form class="changeMembershipForm">
+        <input type="text" id="roomId" placeholder="Room ID"></input>
+        <input type="text" id="targetUser" placeholder="Target User ID"></input>
+        <select id="membership">
+            <option value="invite">Invite</option>
+            <option value="join">Join</option>
+            <option value="leave">Leave</option>
+        </select>
+        <input type="button" class="changeMembership" value="Change Membership"></input>
+    </form>
+    <form class="joinAliasForm">
+        <input type="text" id="roomAlias" placeholder="Room Alias (#name:domain)"></input>
+        <input type="button" class="joinAlias" value="Join via Alias"></input>
+    </form>
+    <table id="rooms">
+        <tbody>
+            <tr>
+                <th>Room ID</th>
+                <th>My state</th>
+                <th>Room Alias</th>
+            </tr>
+        </tbody>
+    </table>
+</div>
+    
diff --git a/jsfiddles/room_memberships/demo.js b/jsfiddles/room_memberships/demo.js
new file mode 100644
index 0000000000..b3ce0f0e33
--- /dev/null
+++ b/jsfiddles/room_memberships/demo.js
@@ -0,0 +1,139 @@
+var accountInfo = {};
+
+var showLoggedIn = function(data) {
+    accountInfo = data;
+    getCurrentRoomList();
+    $(".loggedin").css({visibility: "visible"});
+};
+
+$('.login').live('click', function() {
+    var user = $("#userLogin").val();
+    var password = $("#passwordLogin").val();
+    $.ajax({
+        url: "http://localhost:8080/matrix/client/api/v1/login",
+        type: "POST",
+        contentType: "application/json; charset=utf-8",
+        data: JSON.stringify({ user: user, password: password, type: "m.login.password" }),
+        dataType: "json",
+        success: function(data) {
+            $("#rooms").find("tr:gt(0)").remove();
+            showLoggedIn(data);
+        },
+        error: function(err) {
+            alert(JSON.stringify($.parseJSON(err.responseText)));  
+        }
+    }); 
+});
+
+var getCurrentRoomList = function() {
+    $("#roomId").val("");
+    // wipe the table and reload it. Using the event stream would be the best
+    // solution but that is out of scope of this fiddle.
+    $("#rooms").find("tr:gt(0)").remove();
+    
+    var url = "http://localhost:8080/matrix/client/api/v1/im/sync?access_token=" + accountInfo.access_token + "&from=END&to=START&limit=1";
+    $.getJSON(url, function(data) {
+        for (var i=0; i<data.length; ++i) {
+            addRoom(data[i]);   
+        }
+    }).fail(function(err) {
+        alert(JSON.stringify($.parseJSON(err.responseText)));
+    });
+};
+
+$('.createRoom').live('click', function() {
+    var data = {};
+    $.ajax({
+        url: "http://localhost:8080/matrix/client/api/v1/rooms?access_token="+accountInfo.access_token,
+        type: "POST",
+        contentType: "application/json; charset=utf-8",
+        data: JSON.stringify(data),
+        dataType: "json",
+        success: function(data) {
+            data.membership = "join"; // you are automatically joined into every room you make.
+            data.latest_message = "";
+            addRoom(data);
+        },
+        error: function(err) {
+            alert(JSON.stringify($.parseJSON(err.responseText)));  
+        }
+    }); 
+});
+
+var addRoom = function(data) {
+    row = "<tr>" +
+        "<td>"+data.room_id+"</td>" +
+        "<td>"+data.membership+"</td>" +
+        "<td>"+data.room_alias+"</td>" +
+        "</tr>";
+    $("#rooms").append(row);
+};
+
+$('.changeMembership').live('click', function() {
+    var roomId = $("#roomId").val();
+    var member = $("#targetUser").val();
+    var membership = $("#membership").val();
+    
+    if (roomId.length === 0) {
+        return;
+    }
+    
+    var url = "http://localhost:8080/matrix/client/api/v1/rooms/$roomid/members/$user/state?access_token=$token";
+    url = url.replace("$token", accountInfo.access_token);
+    url = url.replace("$roomid", encodeURIComponent(roomId));
+    url = url.replace("$user", encodeURIComponent(member));
+    
+    if (membership === "leave") {
+        $.ajax({
+            url: url,
+            type: "DELETE",
+            contentType: "application/json; charset=utf-8",
+            dataType: "json",
+            success: function(data) {
+                getCurrentRoomList();
+            },
+            error: function(err) {
+                alert(JSON.stringify($.parseJSON(err.responseText)));  
+            }
+        });
+    }
+    else {
+        var data = {
+            membership: membership
+        };
+        
+        $.ajax({
+            url: url,
+            type: "PUT",
+            contentType: "application/json; charset=utf-8",
+            data: JSON.stringify(data),
+            dataType: "json",
+            success: function(data) {
+                getCurrentRoomList();
+            },
+            error: function(err) {
+                alert(JSON.stringify($.parseJSON(err.responseText)));  
+            }
+        }); 
+    }
+});
+
+$('.joinAlias').live('click', function() {
+    var roomAlias = $("#roomAlias").val();
+    var url = "http://localhost:8080/matrix/client/api/v1/join/$roomalias?access_token=$token";
+    url = url.replace("$token", accountInfo.access_token);
+    url = url.replace("$roomalias", encodeURIComponent(roomAlias));
+    $.ajax({
+        url: url,
+        type: "PUT",
+        contentType: "application/json; charset=utf-8",
+        data: JSON.stringify({}),
+        dataType: "json",
+        success: function(data) {
+            getCurrentRoomList();
+        },
+        error: function(err) {
+            alert(JSON.stringify($.parseJSON(err.responseText)));  
+        }
+    }); 
+});