Looks great! We started doing something similar three weeks ago at http://jobsBCN.com, but with the idea of covering all job openings from startups in Barcelona city (Europe).

We have more than 250 job openings for engineers (+250 for biz) in more than 160 startup companies in Barcelona. Salaries are shown for some of them.

It could be interesting to see how different technologies rank against salaries, or regarding job openings. I hope to find the time to show some statistics soon.