RE: Have you ever checked the backlinks of this site?
Oh god, that explains this: http://www.forumkorner.org/thread-130823.html
This site won't last on the google serps for long with these negative non-site related backlinks. Do something Philly, please.
Well, a backlink is a link on one site that leads to another. So most probably, those adult backlinks are a result of building links to FK using those adult keywords/anchor texts. Pretty sure those are not spam links too. Yikes.