I set this up a while ago and Chris, Kosh and others I think run it.
http://www.facebook.com/groups/deusexmultiplayer/
It's become quite interesting recently, a lot of pre-IW players joining.
The recent bitchfest is quite fun too, topics like "is Fear better than Spaz" and so on are very popular, raising well over 100 comments sometimes.
But for "older" players, it might be a place to hook up with old skool buddies.