Feels like we have a problem with content: to many questions are either 1) homework or 2) soft-questions/intuition/terminology — whatever but not a "well-defined math question that actually have a specific answer". Just reading the list of 15 active questions: homework, homework, soft-question, homework, soft-question, soft-question, asking for a definition — almost one half.
I wish we can change the situation.
Update. The main point is not that we have to close more question (although we probably should) but that now we don't have enough questions that should be, I believe, main content of the site: mathematical non-homework well-defined questions having a specific answer.
Update2. There's nothing wrong with soft-question (I certainly don't want to ban them from the site — in fact, I upvoted at least some of them) in general (and I apologize if I somehow offended posters of these questions). But it's well-known that stackexchange engine is better suited to question having particular answer than to informal-discussion-type questions (although latter type is probably more important in [learning] mathematics). And the site can be healthy only if most of the questions are of former type — as we can see e.g. on MathOverflow.