diff --git a/lib/matrix.js b/lib/matrix.js
index dd0d2f3cd..d2c25ff55 100644
--- a/lib/matrix.js
+++ b/lib/matrix.js
@@ -60,23 +60,61 @@ var init = function(exports){
         },
 
         invite: function(roomId, userId, callback) {
-            return this._membershipChange(roomId, userId, "invite", callback);
+            return this._membershipChange(roomId, userId, "invite", undefined, 
+                callback);
         },
 
         leave: function(roomId, callback) {
-            return this._membershipChange(roomId, undefined, "leave", callback);
+            return this._membershipChange(roomId, undefined, "leave", undefined,
+                callback);
         },
 
-        _membershipChange: function(roomId, userId, membership, callback) {
+        ban: function(roomId, userId, reason, callback) {
+            return this._membershipChange(roomId, userId, "ban", reason,
+                callback);
+        },
+
+        unban: function(roomId, userId, callback) {
+            // unbanning = set their state to leave
+            return this._setMembershipState(
+                roomId, userId, "leave", undefined, callback
+            );
+        },
+
+        kick: function(roomId, userId, reason, callback) {
+            return this._setMembershipState(
+                roomId, userId, "leave", reason, callback
+            );
+        },
+
+        _setMembershipState: function(roomId, userId, membershipValue, reason, 
+                                callback) {
+            if (isFunction(reason)) { callback = reason; reason = undefined; }
+
+            var path = encodeUri(
+                "/rooms/$roomId/state/m.room.member/$userId",
+                { $roomId: roomId, $userId: userId}
+            );
+
+            return this._doAuthedRequest(callback, "PUT", path, undefined, {
+                membership : membershipValue,
+                reason: reason
+            });
+        },
+
+        _membershipChange: function(roomId, userId, membership, reason, 
+                                    callback) {
+            if (isFunction(reason)) { callback = reason; reason = undefined; }
+
             var path = encodeUri("/rooms/$room_id/$membership", {
                 $room_id: roomId,
                 $membership: membership
             });
-            var data = {
-                user_id: userId  // may be undefined e.g. on leave
-            };
             return this._doAuthedRequest(
-                callback, "POST", path, undefined, data
+                callback, "POST", path, undefined, {
+                    user_id: userId,  // may be undefined e.g. on leave
+                    reason: reason
+                }
             );
         },
 
@@ -107,6 +145,19 @@ var init = function(exports){
             );
         },
 
+        roomInitialSync: function(roomId, limit, callback) {
+            if (isFunction(limit)) { callback = limit; limit = undefined; }
+            var path = encodeUri("/rooms/$roomId/initialSync", 
+                {$roomId: roomId}
+            );
+            if (!limit) {
+                limit = 30;
+            }
+            return this._doAuthedRequest(
+                callback, "GET", path, { limit: limit }
+            );
+        },
+
         // Internals
         // =========
 
@@ -119,6 +170,7 @@ var init = function(exports){
         _doRequest: function(callback, method, path, params, data) {
             var fullUri = this.credentials.baseUrl + PREFIX + path;
             console.log(" => %s", fullUri);
+            console.log("    %s", JSON.stringify(data));
             if (!params) { params = {}; }
 
             return request(
@@ -162,6 +214,10 @@ var init = function(exports){
             }
         };
     };
+
+    var isFunction = function(value) {
+      return Object.prototype.toString.call(value) == "[object Function]";
+    };
 };
 
 if (typeof exports === 'undefined') {