Check Your User Name on Multiple Websites

CheckUserNames is a great service which lets you find a specific username on multiple websites like Twitter, YouTube, Blogger, Digg, StumbleUpon, Delicious, Yahoo, Google and many many more. It’s a simple service which doesn’t require any registration / sign-ups, all you need to do is enter a UserName on their website and click Check user name. It will give you all the available websites where you can register with that name, saving you loads of time.

Official Website: CheckUserNames