This application has a tridimensional interface by means of which you'll be able to establish relations using a chat. It's installed as a plug-in that is added to your browser, and it only requires that you create a Google user account, if you still don't have one, to be able to access the different chatrooms.
Once inside, you'll be able to create your own characters, from its name and avatar to its graphic aspect. From that moment onwards you'll be able to become part of any of the existing chatrooms, with the added possibility to create your own space where you'll be able to receive the people you invite.
If you have a lot to say and you're willing to meet new people by means of a chat service, you should try out Lively.