I've seen on many occasions, that people find fixes for problems, but don't know where to post it! It isn't very effective to post the solution onto every problem report people have. It would be nice to have a very basic "Solution" type added, so people can get their problem fixed, without having to post their question, and wait for it to be answered.
As of now, the only way we can post a solution topic, is to put it under idea or problem, and it doesn't seem effective. I've posted many a help topic, but they seem to go unnoticed because they seem like generic topics. They need a different look to them, maybe the color theme could be blue, (or green, like praise reports)
An example, is Mojang. SO many people post the same bugs over and over... It gets tiring to answer the same question 50 times. The duplicate threads, and ignored questions could be helped if there was a simple way to answer their questions universally.
It could also pop up before posting a problem report, suggesting a help topic that could possibly resolve your issue.