Very cool concept, and I would play, but seeing as a huge chunk of my friends that code don't use Facebook, it just doesn't seem worth bothering with right now.
Bitcoin is mainly continuing at this point only because of the large community behind it, as there wasn't much credibility to begin with. Doing things like this does nothing but take that community further from where it wants to be. It was an interesting concept, and still is, but that is all it will ever amount to if this continues.
This is definitely a step in the right direction. Not saying this is a good step to increase piracy, but there really is no need for trackers when we have magnets, and this will lead to a healthier bittorent community.