http://www.nytimes.com/2011/08/16/science/16stanford.html?_r=1&hp With the aid of new proprietary testing and grading software, two Stanford University computer science professors offer a free online and in-classroom course on Artificial Intelligence for the 2011 Fall term. 58,000 students world wide enrolled for it. When proven to be stable and effective, the online mass testing-grading software will likely be licensed for-profit and will not be free open source. NYT 11.08.15