[paulmiwatson]

Interesting approach to a real problem.

Talking out of my arse but could you use the list of "friends" to get a rough idea of who the candidate is? Amongst a given set of friends there may only be one Rubyist with JavaScript and Karate skills...

[jongold]

Good point - quite possibly, depending on the mix of how you describe yourself (e.g. if you just copy your Twitter bio), the sum of the people you choose to endorse you, and the density of the people with your skillset in your social graph/geographic location.

Selfishly, I've always worked in London/San Francisco where almost everyone I know is either a designer, front-ender, Rubyist, or an awkward mix of the above, and everyone knows each other.

I'm not sure how this would work out in more specialised disciplines, other industries or other locations, but the only way to find out is to see how people use it :)