diff --git a/sugar/browser/BrowserActivity.py b/sugar/browser/BrowserActivity.py
index 8b719679..5890ea4c 100644
--- a/sugar/browser/BrowserActivity.py
+++ b/sugar/browser/BrowserActivity.py
@@ -43,7 +43,6 @@ class BrowserActivity(activity.Activity):
 		self._model = None
 	
 	def _service_appeared_cb(self, pservice, buddy, service):
-		print 'appeared ' + service.get_type()
 		if service.get_type() == _BROWSER_ACTIVITY_TYPE:
 			self._notif_service = service
 		elif service.get_type() == LocalModel.SERVICE_TYPE:
diff --git a/sugar/chat/GroupChat.py b/sugar/chat/GroupChat.py
index 94200945..c77525af 100644
--- a/sugar/chat/GroupChat.py
+++ b/sugar/chat/GroupChat.py
@@ -1,53 +1,41 @@
+import logging
+
 from sugar.chat.Chat import Chat
 from sugar.presence.Service import Service
 from sugar.p2p.Stream import Stream
-
-GROUP_CHAT_SERVICE_TYPE = "_olpc_group_chat._udp"
-GROUP_CHAT_SERVICE_ADDRESS = "224.0.0.221"
-GROUP_CHAT_SERVICE_PORT = 6200
+from sugar.presence.PresenceService import PresenceService 
 
 class GroupChat(Chat):
-	def __init__(self):
+	SERVICE_TYPE = "_olpc_group_chat._udp"
+	SERVICE_PORT = 6200
+
+	def __init__(self, activity):
 		Chat.__init__(self)
 		self._chats = {}
+		self._activity = activity
 
-	def get_group(self):
-		return self._group
+		self._pservice = PresenceService.get_instance()
+		self._pservice.start()		
+		self._pservice.connect('service-appeared', self._service_appeared_cb)
+		self._pservice.track_service_type(GroupChat.SERVICE_TYPE)
 
-	def new_buddy_writer(self, buddy):
-		service = buddy.get_service(Chat.SERVICE_TYPE)
-		return self._buddy_stream.new_writer(service)
+		# FIXME remove, when we join the activity this will happen automatically
+		# (Once we have a global presence service)
+		self._pservice.track_activity(activity.get_id())
 
-	def _start(self):
-		name = self._group.get_owner().get_nick_name()
+	def _service_appeared_cb(self, pservice, buddy, service):
+		if service.get_type() == GroupChat.SERVICE_TYPE:
+			logging.debug('Group chat service appeared, setup the stream.')
+			self._setup_stream(service)
 
-		# Group controls the Stream for incoming messages for
-		# specific buddy chats
-		buddy_service = Service(name, Chat.SERVICE_TYPE, Chat.SERVICE_PORT)
-		self._buddy_stream = Stream.new_from_service(buddy_service, self._group)
-		self._buddy_stream.set_data_listener(getattr(self, "_buddy_recv_message"))
-		buddy_service.register(self._group)
+	def publish(self):
+		service = self._pservice.share_activity(self._activity,
+				stype = GroupChat.SERVICE_TYPE, port = GroupChat.SERVICE_PORT)
 
-		# Group chat Stream
-		group_service = Service(name,
-								GROUP_CHAT_SERVICE_TYPE,
-						  		GROUP_CHAT_SERVICE_PORT,
-						  		GROUP_CHAT_SERVICE_ADDRESS)
-		self._group.add_service(group_service)
-
-		self._group_stream = Stream.new_from_service(group_service, self._group)
+	def _setup_stream(self, service):
+		self._group_stream = Stream.new_from_service(service)
 		self._group_stream.set_data_listener(self._group_recv_message)
 		self._stream_writer = self._group_stream.new_writer()
 
 	def _group_recv_message(self, buddy, msg):
 		self.recv_message(buddy, msg)
-
-	def _buddy_recv_message(self, buddy, msg):
-		if not self._chats.has_key(buddy):
-#			chat = BuddyChat(self, buddy)
-#			self._chats[buddy] = chat
-#			chat.connect_to_shell()
-			pass
-		else:
-			chat = self._chats[buddy]
-		chat.recv_message(buddy, msg)
diff --git a/sugar/p2p/Stream.py b/sugar/p2p/Stream.py
index 45d61a50..af770a23 100644
--- a/sugar/p2p/Stream.py
+++ b/sugar/p2p/Stream.py
@@ -126,13 +126,14 @@ class UnicastStream(Stream):
 class MulticastStream(Stream):
 	def __init__(self, service):
 		Stream.__init__(self, service)
+		self._service = service
 		self._internal_start_reader()
 
 	def start_reader(self):
 		return self._reader_port
 
 	def _internal_start_reader(self):
-		if not service.get_address():
+		if not self._service.get_address():
 			raise ValueError("service must have a valid address.")
 		self._pipe = MostlyReliablePipe('', self._address, self._reader_port,
 				self._recv_data_cb)
diff --git a/sugar/presence/PresenceService.py b/sugar/presence/PresenceService.py
index b76b49c2..ac3b6b7d 100644
--- a/sugar/presence/PresenceService.py
+++ b/sugar/presence/PresenceService.py
@@ -506,6 +506,7 @@ class PresenceService(gobject.GObject):
 	def share_activity(self, activity, stype, properties={}, address=None, port=None):
 		"""Convenience function to share an activity with other buddies."""
 		uid = activity.get_id()
+		logging.debug('Sharing activity uid %s, stype %s' % (uid, stype))
 		owner_nick = self._owner.get_nick_name()
 		real_stype = Service.compose_service_type(stype, uid)
 		if address and type(address) != type(""):
diff --git a/sugar/shell/shell.py b/sugar/shell/shell.py
index 803d3a8d..630bde5c 100755
--- a/sugar/shell/shell.py
+++ b/sugar/shell/shell.py
@@ -80,7 +80,7 @@ class ActivityHost(dbus.service.Object):
 		self._create_chat()
 		
 	def _create_chat(self):
-		self._group_chat = GroupChat()
+		self._group_chat = GroupChat(self)
 
 	def get_chat(self):
 		return self._group_chat
@@ -95,6 +95,7 @@ class ActivityHost(dbus.service.Object):
 		pass
 	
 	def publish(self):
+		self._group_chat.publish()
 		self.peer_service.publish()
 	
 	def tab_close_button_clicked(self, button):