Originally Posted by wsmaal
Great Calibre, but reading with the Calibre E-book reader on the computer isn't fine. Why?
Calibre wasn't designed to be an ebook reader. It's a multipurpose application that just happens to be able to display ebook files. It only understands epub files (everything is converted before display) and there's better readers available. If you're *buying* ebooks from vendors, it's best to use their reader. If you're trying to read free ebooks, it probably makes more sense to use the Firefox epub reader plugin which does a much better job.