Is there a Django app that can give me easy friend importing AND invite from Facebook, Twitter, and Gmail?

Super easy django app that just lets people click "Facebook", and then invite AND i开发者_如何学JAVAmport their friends

Take a look at the pinax (http://pinaxproject.com/). They have a lot of reusable apps and one of those provide mechanism for inviting friends from openid based sites (i.e. facebook)