This question already has an answer here:  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?)
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ChrisF Jun 6 '13 at 19:25   10 Answers  I usually upvote a
question when:  1) I'm already curious about the same question.
2) They made me curious about what they're asking.  Upvoting it
may make it more visible to others.  share|improve this answer
add comment  I will upvote a question if:    • It is clear and
well-written, including sample code where appropriate, useful
tags etc. Ideally it should indicate that a certain amount of
thought has gone into