There has been a few questions recently which have been closed and then reopened (How to physically handle hundreds and hundreds of papers, How to deal with the frustration of doing PhD at a low-ranked university). As a moderator, it was particularly difficult to deal with these questions because there were not enough comments explaining the motivations of each "side".
Of course, it's ok to vote to close a question, but if you believe this question can be improved, leave a comment explaining why it should be closed and how it could be improved, or upvote a comment left by a previous user. If nobody edits the question, then it's ok to delete it.
Similarly, it's ok to vote to reopen a question, but if the nobody edited the question, please do so, or leave a comment explaining how you believe it could be improved.
Also, feel free to use up/down-votes! The more information you provide (in addition to your votes), the better.