Recently, Martin Smith wrote an article about some SEO research that he did.  His findings revealed a super interesting fact: In terms of content, Google loves Questions and Answers.  To take this a step further, few people are using a platform where their customers can freely ask and answer questions.  This type of Q&A is often referred to as a Social Q&A.  There are a few companies who have developed this type of software, most notably, AnswerHub.  AnswerHub is an extensive take on a Q&A because it was built as a platform first which allows the user to do just about anything they like with their Q&A. 

You can find the original article here.