I would advise anyone thinking of an .xxx domain to reconsider. Although you can register the rather pricey domain (~$95 a year) The ICM Registry are in full control of whether or not the domain resolves.
According to their website you need to register as part of their 'sponsored community'. 'Fair enough' you say, 'where do I sign up'? Well you can't. At least not until the ICM send you an email with a valid link to a sign-up form. What they don't tell you is when you will get that email, and no amount of emails to ICM will enlighten me either. For me it has been seven days so far. Meanwhile the domain is earning me nothing and the registered year ticks along.
When will I get the email? Two months, three, never? Who knows. All I know is this is a very shady practice and I would stay the hell away.
Source: http://www.reddit.com/r/web_design/comments/nattk/the_great_xxx_con/
