I was half way through writing a question for ServerFault. As I went to take a screenshot of the problem, I tried something different and stumbled on the answer.
I didn't get to ask the question, which means there's nothing to answer anymore. There still won't be a search result in ServerFault the next time I or someone else has the same problem in 3 months time.
I thought that perhaps I could still post my original question ("How do I..."), but in the body, include the answer I found. What's the StackOverflow community consensus on this? Is it appropriate or does it break a StackOverflow law?