Recently, I helped someone I know revamp a little project they had. It’s called Enlightened Reason, and it is a forum dedicated to the discussion of Philosophical subjects. Pretty much anything goes there in regards to discussion, as long as you don’t flame another member if you disagree with their view, and no links to warez and porn (though discussions about the viability or morality of those subjects are allowed).
If you’re looking for a place to speak your mind on controversial subjects, and all those other forums don’t want that kind of stuff, then Enlightened Reason is the place for you. Every once in a while, we all like to have intelligent discussions with others over topics that might normally be locked or deleted at other places. But at Enlightened Reason, those are the kind of topics that we look for. Come join, and speak your mind. :)