If you are interested in finding the availability of name on different Networks here is cool tool which helps you to check the Username availability on Multiple Networks with a single click. Namechk is the tool which helps you to choose the best username available for you on dozens of social networking and bookmarking websites. Just type in the name which you prefer to use as your username and click the chk button thats it. You can know the availability of the username on different networks. This is Cool isn't it !.
You can also suggest your favorite site to be included in this list by clicking the link.