Like Wolfram, I've been doing some personal analytics for a while, but only with email (http://sluggish.dyndns.org/wiki/Emailgraph). Potentially it would be possible to build a Friendica addon which does similar things to the Facebook Report.
That's pretty cool -- I always suspected people out there had done this kind of thing. Nice work!
P.S. You should try out Mathematica sometime, it is a better fit for doing cool things with rich data than C or even Python (disclosure: I work at Wolfram).
