This question already has an answer here:
- Why aren't people voting for questions? 51 answers
I've been wondering about this ever since I signed up on SO. With answers, it's easy to determine what to upvote. Is it helpful, is it informative, is it correct?
None of that really applies to a question though. So which criteria are we supposed to use for upvoting questions? (And for that matter, which purpose does it serve? Upvoted answers are listed first, so here the effect is obvious. What difference does it make whether a question gets upvoted?)