Here is a link to the facebook Twilight Wikia Facebook Page:
http://www.facebook.com/groups/51969956920/
It has everything Twilight. Here is more Twilight groups, the links are below
Twilight Convention group:
http://www.facebook.com/groups/40046501465/
Robert Pattinson group:
http://www.facebook.com/groups/136338843089083/
Robert Pattinson facebook page:
http://www.facebook.com/pages/Robert-Pattinson/187560767946221
House Of Twilight facebook page:
http://www.facebook.com/House.Of.Twilight
Plus there are a whole heap more if you have a facebook account here is a link to facebook
Twitter link: