In undecided questions, what happens when it is a tie-breaker?
It stays in tie-breaker status until people come along and break the tie. I THINK the system checks them every 12 hours to see if any ties have been broken. So if you break a tie, it might not be resolved for a while, giving other people a chance to tie it up again … or not. So you can help the situation by looking for old unresolved questions (go into the Vote tab in Discover, and sort by date, then reverse sort — or maybe the first sort is sufficient — and make people’s day by voting). And you’re right, you can vote on a given question only once. If you see the vote counts, it means you’ve already voted on that question and need to move on.