Contemplating e-books

"'Vanity' Press Goes Digital," enthusiastic article about self-publishing e-books in today's Wall Street Journal (which publication, incidentally, I read on paper after picking up from the end of a fairly long driveway), makes me want to self-publish some e-books based on ideas I've had, including ones I've not yet even run by a publisher. The world has changed, and based on my experience of publishing-industry gatekeepers, their eclipse is not much of a loss.