> Steam bans porn? o.O
> 
> Just put in a "Must be this age to buy" thing.

Of course they ban porn. And we're talking hardcore, but mosaic'd, hentai/eroge. But you can still get tits.

Steam doesn't even allow AO rated games on their platform. Though they do allow unrated games (including games which would likely result in an Adults Only rating if they bothered to get it rated).