Interesting. While you may or may not agree with the .XXX domain, it seems that we are going to be getting a lot of new domain extensions. The new gTLD process is going to allow a lot more applicants in the next year or so.
It's a matter of time before corrupt MPAA style bureaucracies start to force the labeling and filtering of every piece of content out there. And god help you if your website has more than one type of content on it.