Check Availability of Usernames on Popular Sites with Usernamecheck
With so many services now available online, you would want to maintain the same username on all the sites. But sometimes that is not possible as someone might have used it on some site. Usernamecheck is a Web Service that enables you to check the availability of your user name across 45 popular sites.
This way, you can check whether your preferred user name is available on a site or not. You just have to enter the username and press the “Check” button. It will then check it across the 45 sites and tell you whether it is available or taken.