Have a look at the 'members' link (at the top, just below the header and above the forum title for Jared) and observe. There is some person/people creating profiles which are url names (ie [url=http://reddit.com/user/buy-viagra-online-2, [url=http://2000.porn-porn-online.info]abc clip fr). I don't know if these are real urls or not (they could be virus links so I aint gonna bother) but if they are, wouldn't that be classified as advertising?