[TurboFool]

Essentially the idea is he doesn't want to keep generally releasing builds that are very buggy, filling his inbox with hundreds of complaints about the same things. So he's narrowed down the releases of the versions he knows have issues to just the people who happened to be dedicated enough to donate money, which makes them the most likely to be helpful. Realistically we're people who he's chosen as early testers, and his criteria was the fact that we were committed enough to donate money.