The [FGS] Clan

Group Name "Deus Ex Multiplayer"
deusexmultiplayer@groups.facebook.com

As far as I can see this is the only site on Facebook, specifically about MP. It's basically a portal for the forums. If any want admin let me know.

it's good idea, makes contacting DXMP people easier

I've added a lot to the forums it links to, just I don't know how to embed video onto the freeforums.org forums, which is causing the site to suck a bit.