Obscure and weird forums

[kwerk]

BridgeTalk:

http://www.bridgesite.com/scgi-bin/dcforum_8z/dcboard.cgi

Hearth forum (Fireplaces):

http://www.hearth.com/econtent/index.php/forums/

Prison Talk:
http://www.prisontalk.com/forums/index.php

Any more?