Got yer free speech right here
Well, have I got a treat for you! F169 BBS is a new website -- just started a month ago -- which provides exactly that (there's a handy intro page for new users). The only limitations are (1) no child pornography (most websites have that rule, since allowing such material can lead to legal problems) and (2) no gay pornography. Aside from that, anything goes, and I do mean anything. To maximize disinhibition, it's anonymous; you can register a "moniker" to use consistently, or type in any name you choose, or post totally anonymously "as a dot". People who are used to the blogosphere will need only a minute or two on F169 to notice something they think is so outrageous that it ought to be banned. That's the beauty of real free speech, though. If you can say anything you want, so can everybody else.
There's a certain amount of complete rubbish and childish material as well as outright shocking stuff, but some serious discussions too. You want free speech, there it is. And you'll find out what a certain number of people out there really think.