not necessarily. Some things can be banned as hate speech, pro nazi statements in Germany spring to mind. These guys obviously walk the line, don't know enough about them (screw actually viewing their website on any connection that has my name tied to it) but I imagine they have to be VERY careful with the language around the shit they obviously want to get up to.
That was my position. It seems that it is a website which incites adults to have sexual relationship with kids, which is a crime. Incite a crime, as far as I know, is considered to be a misuse of the liberty of expression, and thus is persecuted. Still, it is hard to judge a website content when you are not willing to enter it :/