Social Network for Developers

Hello, I'm working on a rough idea I have but I would like to collect suggestions from fellow hackers because that's the target audience for that. The basic idea is to have a mashup profile page that contains twitter account, latest blog entries, interets, github and mercurial accounts and so on. On top of that some social networks functionalities (e.g. followers, messaging, status updates). There is also a calendar of events for developers. Do you think something like that could be useful for you? What could attract developers to visit such a website periodically? http://www.superdevs.com