I'm curious about this thread, it keeps going to the top with the last post being Hamish, is there something I don't see as I'm not a full member? I take it the answer is it goes up to the top thread when someone votes and they're just not leaving a reply? Am I really this thick or do I just not understand polls?
You got it - a vote bumps it up.
It can be really annoying when people find a really old poll that the original poster didn't put a time frame on and add a vote. It causes lots of fresh voters so it has new life for a while but less relevance!