We all know there are way too many social networks out there. How can you keep track of them all, much less create and maintain profiles on more than one or two? Well, a new startup called ProfileLinker (in closed beta) wants to help you do just that. You create a profile once, and then you can export it to multiple social networking sites.
There has been an obvious need for this type of service for a while. I think we are goingto start to see a lot of centralized identity services popping up, not just for social networks, but for reputation, financial identity, and other forms of authentication.