In reading your blog I really think your off base that to use sponsor content in galleries and sites is the better option most places wont list those sites or galleries cause all they have to do is use the sponsor hosted galleries or sites. I think sponsor content can be best used in other ways as in hub pages and such. Also big file sizes come on are you willing to throw away countless thousands if not millions of surfers who cant get broadband? Remember this "Ronald nobody who makes little ones out of big ones all week comes home all alone to his trailer with pocket full of credit cards surfing the net on his good old dial up"
The moral to this story is don't leave any food on the table