Same with MOOCs I think. It's too bad most of them are so bad they are not worth taking, but the ones that are good (e.g. Andrew Ng's machine learning MOOC) are

Same with MOOCs I think. It's too bad most of them are so bad they are not worth taking, but the ones that are good (e.g. Andrew Ng's machine learning MOOC) are having insane impact even though most people don't finish them.