Interesting, but this doesn't address the other problem--I fundamentally dislike Github! (I use Bitbucket because of consistently stellar support from Atlassian and an overall pleasant working experience.) And going outside my current, working ecosystem for benefits I consider dubious at best--the overwhelming majority of open-source projects get no outside commits, ever, and magic Github pixie dust doesn't really change that--isn't really a good use of time.
For me, Git and Github are both problems with this "GitHub's your resume" thing, not one or the other.