What I find somewhat amusing, is the the concept, or perhaps more aptly the delusion, of free speech on internet forums and how "censorship is bad" in one corner and the "political correctness" squad in the other. Both are irrelevant. Now while I do believe censorship is bad for my real-life values, it is likely to be encountered on internet forums because they're not free public commons. Sheepy owns this site, and on top of the server host country's laws and the IP Board's ToS, he can limit and censor discussion in any way he pleases. This forum is his licensed property.
Even 4chan isn't immune, the owner (which apparently is no longer moot), or their delegates, can censor any of the boards however they like, even /b/. Because they own it.