there are a couple of general Buddhist forums I'd like to recommend.
www.freesangha.com
www.buddhaforum.org
Both pleasant and encouraging of free speech and discussing a broad range of topics across all different traditions. New members always welcome :-)
(NB: I'm not a moderator or PR assistant or anything like that - not trying to promote anything or replace this site in your online activities - just putting the links up here in case anyone is interested!)