How ranking works
Servers are ranked on two things players care about: how many people play there, and how many vote for it. Score = (votes in the last 30 days + 10 × typical players online) × uptime. So a big server ranks high even if it never asks for votes, and a small server with a loyal community can climb by voting. Voting never needs an account.
Every vote goes through fraud checks. Votes that fail still reach the server so you get your reward. They just don't move the server up the list.