Porn Clown Posse: Erotic Clown Artists
San Francisco based clown group.
http://www.pornclownposse.com - Details

Klown & Jester
Contains photos, illustrations, original art, message board, and chat.
http://groups.yahoo.com/group/klown_n_jester/ - Details

Stop Clown Porn Now
Humor site contains many links and some events. Heavily oriented towards parody.
http://www.stopclownpornnow.org/ - Details

Yahoo! Groups: The Klowned Klub
A group dedicated to digitally manipulated clown erotica. Features photos, chat and a discussion board.
http://groups.yahoo.com/group/KlownedKlub - Details

Clown Fetish
Contains photos, chat, and message board.
http://groups.yahoo.com/group/clownfetish/ - Details

Ouchy the Clown
Professional domination, disc jockey, and facilitating services.
http://www.ouchytheclown.com/ - Details

Women as Clowns
Centered around the appreciation of female clowns as fetishism. Contains chat, photos, and message board.
http://groups.yahoo.com/group/womenasclowns/ - Details