It seems most folks here are pretty disgusted at the idea of advertising in books, but how would you feel about direct corporate sponsorships conducted in a tasteful manner? Let's say your favorite sci-fi author's books were all released as Intel Presents or AMD Presents, similar to the old anthology shows from the '50s & '60s such as The Alcoa Hour, Kraft Television Theater, and the Westinghouse Desilu Playhouse; would that inspire the same level of disgust?
I'm very interested in finding a way to distribute fiction for free without DRM, thus maximizing the value to readers, while at the same time raising some profit for the writer. Advertising seems to be the optimal way to get it done. The other leading contender would be the Ransom Model, but that has some inherent weaknesses that are rather difficult to work around. If you have other ideas, I'm absolutely all ears.