I've created the official forum for my last.fm group http://www.lastfm.com.br/group/Female+metal+vocalists
The a forum who explores essencially the Female voices in Metal... But also a bit of Male voices and other genres... Watch the promo video:
URL: http://femalemetalvocalists.forumotion.com/forum.htm
PS: Thanks to Cris for the forum design!