I did something similar for my side project at: <a href="http://skill.report" rel="nofollow">http://skill.report</a><p>To avoid the LinkedIn issue, I crawled job ads (about 10M uk ads over two years), and applied analysis to them. I love your approach - I'm going to have a play this weekend :)<p>LinkedIn has so many amazing datasets locked up in the platform. I was keen to see whether I could reproduce the skill graph that LinkedIn has, and apply it to other problems, such as valuing and comparing skill sets and knowledge from job titles alone.