The subreddit, which currently has 498 THOUSAND subscribers and increasing on a daily basis, is planning to ban half its population in honour of the Mad Titan, Thanos. In order to ensure you're banned, you simply have to post in the subreddit.
So, what are people posting, you might ask? Stuff like this.
This isn't the first Thanos-related internet concoction to make its way online after the release of 'Infinity War', however. Previously, a website called DidThanosKill.Me automatically selected your IP for death or life at random, with the decision being final. In other words, you couldn't refresh and get a new decision after it registered your IP address.
Perfectly balanced, as all things should be. So, if you want to join the fun and you've got an active Reddit account, go here and subscribe.