(2) http://glassbowl.info/ is not leading for me
(3) If you did scrape LinkedIn, you probably violated their ToS, so you may not want to admit this publicly in case this goes anywhere :)
But if you change that portion, LinkedIn will still find my profile, and the page seems to be working; as always YMMV
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 :)
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.