Ikr, I don't even like those servers. You join, huge chat spam, can't have a conversation, and you're completely lost. Then, the console spams something along the lines of: Donate!Donate!Perks$$$
So basically, people who donate get the full experience out of the server. I don't want to spend another 5$ for like 2 new features when I paid 21$ for minecraft. That's why I'll try making a fun server, custom plugins, when I have enough money. Players who donate get funny,awesome features but it doesn't make them better at the game (KitPvP: Diamond armor, protection 9999)