For anyone wondering how this plugin might be useful, we had it developed to work in conjunction with the gamification plugin.
We allow our users to gain points in our contributor program by contributing to our GitHub repositories. We had this plug-in made so we could ensure that the user actually owned the GitHub account they said they did. When we have a contribution event occur in GitHub, we query our list of users with connected GitHub accounts and see if the GitHub account exists in the forum. If so, we give them the designated points.