Outside of the altruistic and technical reasons, it's a great background check for technical interviewers. It's pretty hard for me to lie about my contribution

Outside of the altruistic and technical reasons, it's a great background check for technical interviewers. It's pretty hard for me to lie about my contributions or quickly make up 2-3 years worth of github history. It also gets around all those pesky NDA's I've signed such that I can't show my paying work to anyone.