Alfresco Presence in Share

I made a new Alfresco Add-on which has to modes of presence:
- MS Lync via local MS client (using activeX)
- Alfreco local presence for presence (Share in browser)

Alfresco add-on page: http://addons.alfresco.com/addons/presence
Code page: http://code.google.com/p/alfresco-presence/