Site is a combination of discussion board, blog, wiki, and probably some other things -- includes a huge repository of ebooks in several formats. Of particular interest to Kindle users, the downloadable mobipocket guide is a .mobi format hyperlinked index of all kindle/mobi compatible books.
As described by Lifehacker.com: "Mangle is a handy tool for formatting your Manga and comic collections for easy reading on your Kindle. It includes page sorting, downsampling, and auto rotation for fuss-free reading."