You'll also notice if you go to the root page of the server (
http://www.onlyteenfiles.com/), the same affiliate code is being used:
http://www.lookuplive.com/search.php?aid=71655&q=porno
Seems this guy is ripping sites off and linking his traffic to pay per click search engines. Trace that affiliate ID (71655) to the ppc vendor and I'll bet you'll have the thief.
WG