I just found this story by accident: http://www.seroundtable.com/archives/002983.html It's for 2005 but if you look at that particular website, it's still going on. Just scroll down on the side bar you will see the links under Sponsors blah blah. Links are not nofollow either!!!
All in a G-world... The "Do No Evil Company" Just pay close attention before long they may even own your toilet! BTW if you got their "FREE" kewl mouse a couple years back for heavy advertising... BEWARE lol it could be monitoring your hand movements... Muahahahah