I have to say I'm impressed with his blog and the way he's handled the release of Warbreaker. I don't follow the blog religiously, and honestly didn't know he had a book about to be released, but as soon as I read his post on Warbreaker I printed out my Border's coupon and walked over to the store and bought it. I didn't read any of the book online to see whether I might like it, but I figure I haven't read a bad Sanderson book yet. That, combined with his well written post respectfully suggesting people to buy the book if they like it, struck me as exactly the right kind of thing to say to win people's respect.
I also really like the idea of showing people the writing process and releasing the book electronically for free. I think it shows a level of respect for his fans in trusting them to buy the book if they want to support him. If they think it sucks, and don't want to support him, well then they got to read something for free and it didn't cost Brandon anything. I can't really say if this will make Brandon more money or not, but from a consumer's point of view, I love it.