How to find the right questions that I can answer?
I have favourited some tags. I see on homepage related questions getting updated regularly. But out of those questions I can find few questions that I can answer and add value. What is bad is most of those questions have already been answered or have vague answer such that I can't really figure out if that answer is what user wanted or not. Sometimes that is what user wants and I avoid adding another answer. On other questions I feel why should I spend some effort when someone else might be already composing an answer to the question.