Don't you already have sufficient numbers of potential candidates at your other venture (coderwall.com)? Coderwall and PitchBox are both owned by Appdillo. Why not make it clear that both sites are related? The relationship is buried in the TOS on both sites.

Your TOS states: "For example, we ask visitors who sign up for a wall at trypitchbox.com to provide a username, email address, location and links to their GitHub, Twitter, and StackOverflow accounts." Since Appdillo owns coderwall and PitchBox, and coderwall already has a lot of information about developers, is there any manual or automated privacy bleedthrough?