Open University, the distance-learning behemoth based in England, has vastly increased its visibility with open courses, which frequently show up in the Top 5 downloads on Apple’s iTunes U, a portal to institutions’ free courseware as well as marketing material. The Open University’s free offerings have been downloaded more than 16 million times, with 89 percent of those downloads outside the U.K., says Martin Bean, vice chancellor of the university. Some 6,000 students started out with a free online course before registering for a paid online course.