title: One PHP Library for many social networking sites' authorization?
body: <p>I know there are many libraries out there for OAuth and for specific sites' authentication and authorization. I'm wondering, is there any one-stop-shopping library that easily, robustly and perhaps modularly integrates with many popular social networking sites?</p>
  
  <p>It would be nice to have a single library, which, given a set of IDs (FB, twitter, foursquare, etc...) would manage authorization (and maybe sessions in the case of things like FBConnect) for all.</p>
  
  <p>Thanks!</p>