An anonymous reader writes "Author Keir Thomas has blogged about his experiences self-publishing a computing book. Quoting: 'I knew that publicizing the book would be difficult so I hit upon an idea: Why not give away the eBook (PDF) version? I could use Amazon S3 for hosting the file, so it would cost me just a few dollars per month. Sure enough, giving the eBook away generated a lot of publicity. ... Since going on sale at the start of 2009, the book has made me $9,000. ... I’ve had worse salaries in my life, and I’m very grateful, but I know total royalties would probably have been higher had I gone through the traditional route of working with a mainstream publisher. I estimate I have to give away 446 copies of the eBook for every sale of the print edition.'"