I should probably mention that I have put quite a bit of work into developing a similar system myself. I even prototyped and pitched it a couple years ago, but basically got shut down by judges who were offended by the kinds of data I suggested tracking (i.e., everything).

I am quite cynical about companies that extract revenue from personal data (LinkedIn, Facebook, Google, etc.), and I recognize that most people probably aren't. I suppose I am more of an idealist and would have trouble sleeping if I inadvertently created Big Brother, which is why I would risk hamstringing such a startup to try to ensure that it stays honest.