In regards to this question (but I have seen it quite often), what is the official policy (or the common practice) for what to do when someone posts a question as an answer to another question? I've seen this happen quite a few times, and I just flag it as "Needs Moderator Attention" but I feel bad putting any more work on moderators, I don't even know if it's worth their attention, and I don't even know what to do? Should we comment and tell them not to post questions as answers? Should we downvote?
IMO I would comment on the question and tell him to ask it as a question and link to the original one.
I wouldn't downvote though.