Changing your votes.

[Aquillion]

Sometimes, your opinion on a game changes once you've played it a bit more. It'd be nice to be able to change your vote if that happens!

[Tiralmo]

Sometimes, you mean to vote one thing but accidentally click on the wrong value.

[Kjartan]

Yeah, I thought the same. Also sometimes you change your mind after a while, or want to readjust your votes after you played many better or worse games...