Joe Konrath is an author who self-publishes with eBooks, and sells lots of them. I haven't read any of his stories myself, but I follow his blog because he posts all sorts of worthwhile information regarding self-publishing via eBooks. He also promotes other self-publishing authors, even new ones.
Many authors post comments on his blog, and I've found good stuff in them as well. Lots of insider info.
Bottom line, Konrath is very helpful to the eBook author.