Two questions:

One, if this is implemented in truth after the experiment, does it mean that when I initially donate to hubski, the site actually gets nothing? It all goes to my little account to be doled out over time?

This raises some issues, which I will bring up at a later date if the experiment is a success.

Two, am I supposed to do exactly what I would do with this money were it real? Because that would be: set donation to hubski to 100 percent, set donation amount per share to the amount of money I have, donate. In other words, I might play around with the system for a little while, but ultimately I would use it as a mechanism to ... give money to hubski.

As far as I can tell it does you guys' server costs little good to have a bunch of "bitcoins" floating around from account to account without ever funneling to your bills. (Assuming everyone sets 'percentage donated to hubski' <100.) Basically it's like a tax on donating? If I donate via this mechanism and don't set to 100 percent, part of my donation just bounces from user to user until the end of time.

Chalk me confused, but I hope everyone has fun with it.