Write to the board admin and ask them to remove the link, I just clicked on it, and got nothing. The ad might have been pulled.
As to who would do this, didn't you say a few weeks ago you were having a problem with a guy ???

Or one of the last few guy to write a review on you, might have linked to the wrong page by mistake.

Since the ad is down, and they only go to the main page, I wouldn't worry about it to much.

I noticed theres a link to a 22 year olds . bp ad, clearly not me, . Now on my ter profile. Um who has a say in what ad gets tossed up on our profiles because that is clearly not me, wow!
the two old ads one eros one bp are down and now just a link to a very frightening provider using my name, oh lord, why dont they check these? so any one can report an ad with a lady using our name and it just goes up no 0nes checkin if its you ?                        geesh. wont allow me to run a problem report either says  this profile already has been submitted- ect ect. aaagh! who would do this and why? hmm m . obviuosly some one tryn to mess with me by havn a ad with a disgusting loiking girl out up as my only profile ad link,,,,,,,,,,,,,what the f*&^%!

I would find a post by the DiscussionBoardAdmin somewhere here on the board and PM him directly.  It does appear someone is messing with you and that's just not acceptable.  I think the Admin will help you.  He has always been helpful and fair to me.