Simply put, Goodreads is the Facebook for book lovers. There are hundreds of book clubs and thousands of potential readers waiting to discover new authors. I've found success in networking with readers and being as active as my free time permits. It took me a year or so to build a decent following, but it was definitely worth it. The giveaway tool is pretty neat as well, and the site boasts quite a few perks for authors such as campaigns and advertising. I strongly recommend every book lover and author join Goodreads. You'd be surprised at the connections you can make.