I was looking this over and was curious to know if the plan for something like this more towards including everyone in this donation process? For example if for instance someone couldn't donate money, if they remained an active and thoughtful producer of content they would get the bits from others. They would then be able to contribute monetarily to the site and feel in some ways more connected. If that's the goal I think that is pretty interesting.
It is partially motivated by that, and also the notion that much of the value of the site resides in the userbase. Thus, IMO it would be ideal if there were a community-based mechanism for allocation of resources.