I set up an adsense site this morning that is content rich with lots and lots of links and it is not even optimized yet or indexed. All I have done was some social bookmarking and not a lot of that I mean of the 1000 plus pages I might have maybe a dozen or so bookmarked and WOW I have been googled and slurped have 800 unique visitors and have made a whoping $109 us all I can say is WOW I can only imagine how it will be as I book mark more and get indexed etc. So does adsense and social bookmarking work???? in a word YES
So far I have only used stumbleupon and del.icio.us now with stumble upon you just book mark pages with it by category however with del.icio.us you put in metta tags and that is how my traffic has been comming in.