During the last months I was working on telepathy support for gedit-collaboration, a gedit plugin. The plugin allows you to work collaboratively on files via an infinote server. The idea of giving it support for telepathy was to get rid of the extra infrastructure needed (infinote server) and collaborate directly with your buddies over XMPP.
The branch is not finished yet but its functional. Thus I am looking for volunteers to test it and to give me feedback. Since I'm not a UI expert (more a UI non-expert), I really need some good ideas for the UI part, which right now follows the way gedit-collaboration handles infinote servers. That approach is not really intuitive for direct collaboration. So if you have an idea, please don't hesitate.
You can find the branch with my work here: http://git.collabora.co.uk/?p=user/kaserf/gedit-collaboration.git;a=shortlog;h=refs/heads/add-telepathy-support
I also opened a bug to collect all the feedback and ideas: https://bugzilla.gnome.org/show_bug.cgi?id=646312
A big thanks to Collabora Ltd. for sponsoring this work, to Jesse van den Kieboom (gedit-collaboration maintainer) and Armin Burgmeier (Infinote maintainer)
Bits and pieces about free software and various other things.