Usability Testing
Quote: "Usability testing is the process of working with end-users directly and indirectly to assess how the user perceives a software package and how they interact with it. This process will uncover areas of difficulty for users as well as areas of strength. The goal of usability testing should be to limit and remove difficulties for users and to leverage areas of strength for maximum usability."
Comment: Focuses on software usability...but very applicable to the process of usability testing for an online course. Via WebWorld.