Thanks for comment and promise of thoughts :D

Yep, so posts are pitted against each other and the winner stays on for more voting and the loser is removed. You can think of it like a big random queue of posts being voted on. You can post the same thing thounsands of time, I feel the incentives are fine as you are paying to post.

There's some rate limiting but the site has also crashed a few times already :D Didn't expect so many people!