gmchen,
The name on the tab was changed from Donations back to Account Upgrades because some felt that donations usually only get you a warm fuzzy. We're discussing whether to call it something else or not, but in the meantime, click that button and you'll (I hope) see a revised page giving a better picture of what you get for each $ level. Nelson is still working on it so there may be further changes/improvements. As long as you don't click the buttons at the bottom of the page, you can click Account Upgrades as often as you want and then back out of it. Otherwise, the page is still being worked on.