The "freemium" model: http://www.edtechmagazine.com/higher/article/2013/12/how-moocs-can-be-free-and-profitable-same-time

Slate magazine. The title may sound negative, but the article is a positive endorsement of flipping the classroom.

A balanced search for a sustainable MOOC business model: "The reality is that online solutions are still underused by higher education, but we are left to wait for genuine innovation that is capable to provide alternatives in line with academic rigour, quality assurance and student needs in higher education. Students cannot be engaged by simple conversions of boring lectures into online videos that are even more boring, affected by clunky and poorly designed technological solutions and rigid platforms for discussions and 'forums'."

"participants who multitasked on a laptop during a lecture scored lower on a test compared to those who did not multitask, and participants who were in direct view of a multitasking peer scored lower on a test compared to those who were not" (unless their use is integrated into the instructional strategy, emphasizing again the need for good instructional design).