The best way to tell if a website is legit is to search for Harry Potter - since it's not legally available as an ebook, any legit website won't have it. But any illegal site will probably have it because it's so popular. Onread.com offers the Harry Potter series as ebooks, therefore they are not legit and you should not use it.
A forum community dedicated to Amazon Kindle owners, authors, and enthusiasts. Come join the discussion about publishing, audio, troubleshooting, models, styles, reviews, accessories, classifieds, and more!