Is it legit to downvote a question, which content is good and might be helpful for other people, but the content seems to be used for illegal stuff in the question case?
1 Answer
The best thing to do with such posts is flag it. If you don't think the question is helpful from your point of view (and "illegal" goes much further than "not useful" in my opinion), you are free to cast a down-vote. It is totally up to you.
The most downvoted question (as far as I know) is this one on Stack Overflow: How to send 100,000 emails weekly? This is a border-line 'how-to-spam' question. It might be useful to "you", as a spammer, but illegal in some countries. If you want to downvote such a question, go ahead.
You can always let such things double-check by a moderator by flagging it.
Also, consider legality may be dependent on location.
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