Quora is a great site to go whether you have a / loads of question/s or you have answers.
You can learn there a lot. Even from the questions, as they always come from an other point of view. So you need to give the best answers to be able to help your community.
When I've joined Quora, I only came for the answers to my questions, but now I mainly answer questions.
Here I give you a list of my recent answers on the international Q&A site.
Hope they help you too.