I think if the kindle gets ads- this will be a big turn off. I like a good book, but, if they started putting ads in a book- this would upset me. I would rather just read the story and not have it disrupted/interrupted with some sort of marketing.
I would think an ebook would be the same. You do not want a good read interspersed with promotions for ShamWoW!
I think this is what is killing magazines. Some magazines have entire sections of ads, several pages long and they do not number the pages, so you get messed up as to where to go to finish the article you were reading. I cannot buy magazines any more as I cannot stand all the ads. Not to mention, you open the magazine and you have 3 or 4 subscription cards fall on the floor and you have to bend over and pick them up.
At least with a book, we are not subjected to marketing at this point. I hope we never are! Ads and commercials are so prevalent now, that they have become a nuisance that people just either block with technology or block them out in their head.