This may be of interest to anyone out there with an e-book...it was posted in C Hope Clark's newsletter, and if she put it in her newsletter and on her Fundsforwriters.com site, it must be good...frankly, I can't say enough good things about her and her site...everything she puts on there is useful, and she respects a writer's time and realizes that writers have other things to do than read blogs...things like actually writing...
Here is the link to the article on e-book promotion...I assume it's good, don't really have an e-book myself, so I haven't read it...
http://jakonrath.blogspot.com/2011/05/what-works-promo-for-ebooks.html