[Aeran]

I think the risk with not using captcha is that someone could setup a bot network to vote automatically for them. Cleverly setup it could be hard to detect such cheating.

Autovoting doesn't help the MUD community in any way and makes voting pointless. The reason to vote is to show you support a game you like and enjoy. If the game suddenly becomes bad you should stop voting for that game.

It is same with arguments about captchas lowering the traffic to the website. If players are too lazy to vote then those votes might not have been that important anyway, as the player clearly didn't take the minor extra effort to support the game.

In either case adding captcha isn't that much of effort, and could be done as a test run for a voting period or two to see how it turns out.