What are the voting icons for?
Primarily they’re there for you to say whether you think a mistake is entertaining or not – the mistakes are listed in the order of their voted score, so the “best” mistakes will be listed first, and any which people think are really dull will be towards the bottom of the list. The votes also go towards forming the “top mistakes” lists. Voting is different to nominating a mistake as a classic (see below) – quite a few mistakes deserve high scores but without necessarily gaining classic status.