I have an idea for voting.

I'd like to think that copying other ideas that work isn't all quite a bad idea.

I'm not going to list the RSPS in question, but what they do is have a ::vote command that opens the voting website open. Here's the trick: it opens the vote command with your own unique URL, telling the server which account voted for the server! Using that info, the server could then reward you with a prize and I am rather fond of the prize they give you: 1.5x XP for 30 minutes. It's a nice little kicker and it isn't hugely impacting gameplay. The URL prize is IP-based so you could then give out your vote page to friends, which not only encourages you to share the game by word-of-mouth but increases the # of votes a server gets.