Recently, a friend sent me a message about a website I run, suggesting that I add classifieds to the site. After thinking about it, I realized the integration of classifieds could be beneficial for myself and my users. Yet I had never considered it before! My site had no place to submit feedback and who knows what other great ideas I’ve missed from other people.
http://www.uxbooth.com/articles/increasing-usability-with-user-feedback/