Want a certain username? Don't spend time checking each site. Let Namechk do the work for you. What's really impressive about this service is the speed.
New service digs through different sites to see if your user name there is open. If it is, you can either sign up for it, or pay the service to do it for you.
April Fools' Day tends to bring out the shenanigans in companies big and small. But every once in a while there are some real product launches amid the jokes.
A new experimental Firefox extension lets you get more information about your online friends by cross-referencing their name with Google's Social Graph API.