What does FourSquare offer a computer service business?

If you are reading this blog post, you probably know that I am pretty involved in Social Media. Some may say I am addicted to it! I am active on Facebook, Twitter, LinkedIn, FourSquare, Plaxo, and still have a MySpace account, though I don’t really use it that much. I haved tried out Google Buzz, FriendFeed, and several business only …