So you've checked the websites I mentioned previously. Where else can you go to find stuff to read? Here are three more suggestions.
Fresh Fiction helps you find new genre fiction. You can search for authors or titles (to see a list of titles in a particular genre, click "Advanced Search," then select what you want from the drop-down menu and click "Search" without typing anything else), see reviews, or enter contests. Follow updates on Twitter, become a fan on Facebook, subscribe to the newsletter, or keep current with the blog. You can register, but it's not necessary to search the site.
Good Reads and LibraryThing are similar in that you can create an account and add titles to your library, tagging them and writing reviews. You can see what other people are reading and get ideas for what you want to read next. They let you be part of a community of readers, sharing what you like. (I'm on LibraryThing. Check out my bookshelf.)
What other reading or book websites do you like?