Should I ask a question I know the answer to?
A few hours ago I was stuck with an IE9 CSS problem. I normally try to first find a solution myself and if that fails, check for an existing question at SO. If there isn't one, I post it as a question.
However, this time I found the answer myself before having to access SO. I think the answer was interesting to share with the community, but it would feel silly to ask a question and immediately answer it myself.
What would be the policy/guideline in such situations?