How many sites?

Tweet

I recently became member of Hub pages and i was surprised to know that they let you put your adsense code in their site. Then i reserched and found Triond too allowed me to do it. I think there must be many many sites who let you do this.. there must be some uploading picture sites too.. so mylotters do u know any such sites apart from hubpages and Triond which let you put your adsense in to your account on their site?