Right now, we aren't doing any kind of indexing. If you apply for a position through our service, you give whatever information you want about yourself, and we check out your public data on those networks. If you don't want to share your twitter or stack overflow, leave those fields blank.

We don't publish the details of the algorithm but in effects it would be fairly difficult to game. Either you have a solid history of consuming and contributing relevant content or you don't. If you are able to manufacture that fraudulently, well, chances are that you're somebody interesting to talk to.