I saw this posted on reddit earlier:
"(From mojang's Q+A blog post):
Can I award all players with a gameplay feature if I reach a donation goal within a time period?
Yes, so long as all players receive the benefit regardless of who donated then it?s OK.
So, if we go back to the example of diamond gear, everyone could get a free diamond pickaxe or something if a donation goal was reached. And that's just one example, but I think that sort of encapsulates the overall gist of what Mojang wants to do here. You can get money, but, just as the EULA has always said, not in an "unfair or unreasonable" manner."
So in theory, if we reach the monthly donation goal, everyone who donated would be able to get something. Just not in any "unreasonable" matters according to Mojang.
EDIT: Full post
http://www.reddit.com/r/Minecraft/comments/2cc1rz/about_the_eula_enforcement/cje5wey
