http://www.skyblock.net/forums/donor-donation-issues.32/ just giving help to some newbs on cyp's profile page
You are allowed to accept donations You are allowed to accept donations from players. You can thank them publicly or in-game, but can’t give preferential treatment for donating. You are not allowed to restrict gameplay features in an attempt to make money. You are allowed to provide in-game advertising or sponsorship opportunities You are allowed to put adverts in your Minecraft worlds to help with costs. Used within reason, adverts and sponsorship can be appropriate ways to fund a server. You are allowed to sell in-game items so long as they don’t affect gameplay We don’t mind you selling items in game, but they must be purely cosmetic. Pets, hats, and particle effects are OK, but swords, invincibility potions, and man-eating pigs are not. We want all players to be presented with the same gameplay features, whether they decide to pay or not. There is one exception to this rule – capes! We have a lot of fun making cool capes for extra-special members of our community and Minecon attendees. We’d like to keep them as exclusive as possible. So, yeah, no capes please, even if you’re giving them away for free. You cannot charge real-world cash for in-game currency We don’t mind in-game currencies which are earned through playing, but you are not allowed to sell them for real-world cash. Remember – if the stuff you sell affects gameplay, we’re not cool with it.