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Mojang cracking down on servers that accept payments for perks
Interesting read: http://www.pcgamer.com/2014/06/06/mojang-hints-at-crackdown-on-pay-for-perk-minecraft-servers/
Basically means you can accept money from your players on your server, but you can't give them stuff on your server in return. I don't see this working out very well for Mojang, there's shit tons of servers that do that out there and sending lawyers at all of them is going to cost a shit ton of money, not to mention there will be those that the lawyers just can't touch.