This post is going to be my place for remembering where I can download free Kindle e-books. I've been downloading the non-drm versions in mobi format, which seem to work fine on the Kindle.
- Manybooks.net [http://manybooks.net/]
- Feedbooks.com [http://www.feedbooks.com]
- MobiPocket [http://www.mobipocket.com/freebooks/default.aspx]
- Manybooks.net [http://mnybks.net] Download directly from Kindle
- Diesel E-Books [http://www.diesel-ebooks.com/cgi-bin/category/free_download]
- Tobias Buckell, sci-fi author [http://www.tobiasbuckell.com/2008/03/04/free-ebooks-three-points-and-a-whole-lot-of-rambling/]
Of course, most of this content comes from Project Gutenberg, but I appreciate that the other sites have already formatted the content into mobi for quick uploading to the my Kindle.