How can we improve collaboration between questioners and answerers?

Since I have been involved with Socratic I have answered many questions but asked very few. I recently asked a question in Chemistry. I received an answer within a day which is great. I posted a comment to clarify things. The answer was improved and now really answers the question. When topics are in beta there is a forum to chat. I think this needs to be available after beta. Also, how can we encourage questioners to thank answerers and ask for further clarification?