Minecraft has finally started enforcing their EULA, which means a lot of things for Minecraft servers.
Let's break it down.
The EULA states that using, owning, playing or anything else'ing relating to Minecraft, that you cannot do the following:
give copies of our Game to anyone else;
make commercial use of anything we've made;
try to make money from anything we've made; or
let other people get access to anything we've made in a way that is unfair or unreasonable;
This is a direct quote from Mojang.
Give copies of our Game to anyone else:
This means that you cannot share an account with anyone else so you can both play at once. This is a given, and I'm sure you all abide by this.
Make commercial use of anything we've made:
This is where it gets a little complicated.
Basically, you are allowed to make money with Minecraft. Before you hop to the forums and complain, read the following.
We can make money with Minecraft, with certain restrictions. As long as you make your own content, be it a Let's Play, music video, animation or other fun stuff like texture packs.
You can also make money with a server by selling cosmetics, general donations, or donor tags.
However, not a single one of these items can benefit gameplay whatsoever.
You've seen a lot of servers about a year or two ago that sold donationwares. Donors got gameboosts, new areas, better gear or double money. Since the EULA wasn't really enforced, servers got away with that. Now that Microsoft bought Mojang and are enforcing it more strictly, we face shutdown and an IP blacklist from the core MC game itself if we do not comply.
The Eververse is completely compliant, and 100% allowed within the EULA guidelines since emotes and Sterling Treasures don't benefit gameplay.
The EULA also allows buying a whitelist pass for a fee, but we don't do that. We like our players and we like having the game be 100% free to play. Pay to win is how to ruin a server quickly.