Saw a question posted today, reasonable question, well stated. With immediately below it, a good answer. Nothing especially deep or beyond the range of a little Wikipedia or other research, but a good answer with links to another question or two plus a couple of references. Accurate & straightforward, all good.
Then I notice that the answer was posted within a minute of the question, by the same account.
"Somebody might ask this, so let me ask it for him, and provide you my answer."
Hadn't seen that approach used before on other message boards or Stack Exchange boards, but that doesn't mean much. On the programming (Stack Overflow) boards, it's not uncommon to ask a question, and then later through the combination of inputs received plus one's own further research & effort, arrive at a solution, and then share that solution as a way to help others who may later have the same question that you started out with. That's not what happened here, though, and this seemed a little odd, ... let me post what I know (or, what I put together with a little research) in answer to nobody's question but my own. Is that an approved and/or a common way that topics get populated here?