These are webrings, clubs, or Yahoo!groups I recommend (whether I belong to them or not :)) The links provide further information on what the group is about and how to join (they are totally free!)
Catsart Yahoogroup A group for fanartists which offers some criticism but mostly compliments :)
JellicleJunkyard A Yahoo!group for fanfiction writers. Offers constructive criticism, and of course, lovely fanfics.
Jellicle A Jellicle role-play.
Electra's cool too!
Molly made this banner. She asks everyone to put it on their site in support of those affected by the NY tragedy.