This is exactly why we started Entelo. We felt that online sources are quickly becoming the "new resume" and that if you draw the trend lines on the data, if it's not obvious now, it will be very soon. Remember, none of the sites referenced in the post (Github, Stack, Coursera, etc.) existed five years ago. What will exist five years from now?<p>Also, an emerging trend is "Github for X". You have sites like Grabcad (Github for Mechanical Engineers), Dribbble and Behance (Github for Designers), Benchling (Github for Biology), Proformative (Github for Accountants), etc. As these professional communities grow they'll increasingly be looking at by employers.<p>It's early for this trend but we believe deeply in it.