Pimpwar was pretty cool until they introduced a "turn buying" facility... then it was just a game of who had the most available credit. There was no link shenanigans though.
I think the most creative one I saw was a guy who set himself up as a 16 year old girl on Faceparty, promising loads of free pics of "herself"... which, of course linked to his Outwar page. I don't see any harm in milking the pervs online. That sounds rude doesn't it?