Very cool space to play around in. You should check out Naveen's personal site (foursquare founder) as he was playing around with something similar for his own data a few years ago:
There was also the Locker Project (http://lockerproject.org/), which I was keen to use and contribute to, but it stalled years ago.
I saw that and was glad that people supported a similar idea. I think this is better though - it opens up that portal for everyone. It also opens it up in a way that people in the open source community can build on it (extra modules that is).
Does it work for you?
I'm getting an 'Application Error' on the endpoints