[Frost1x]

Or your proprietary work you don't own IP to. Ironically, some look to GitHub to somehow correlate with employment history. Many employed are too busy sinking development time in source that's never releasable. Some companies may contribute to certain OSS projects publically but a lot of their core business code base is protected.

[Benjammer]

This is what I never understood. Say that I choose to spend my spare time in propriety code instead of open source or personal hobby code. It seems like some recruiters are making a tradeoff in indicating metrics here. They are saying that a good GitHub profile correlates so strongly with a good recruit, that it's worth a false positive of someone who spends too much time working on side projects and doesn't get as much done at work, and also this seems to be saying that people who spend spare time innovating proprietary code aren't worth finding and should be lumped into the weak coder pile by default. Is this a plausible deniability thing? ("How could I have known that guy would be a dud? I mean, look at his GH!"). This can't possibly correlate as well as people claim to success on the job... There just seem to me to be too many other complicating factors for this specifically to be any kind of decent metric.