Everyone in the tech world talks about business models. But I’ll bet that if you quizzed a random sample of these people, you’d find that they really don’t know what a business model is. I did just that with my students at UC-Berkeley. Most raised their hands, and MBA student Blake Brundidge's attempt to answer the question was a valiant one—but none of them really had a clue. The only one who got the answer right was Lionel Vital, a Stanford student gatecrashing my iSchool class. The reality is that discussions of business models are like discussions of teenage sex: everyone talks about it...

This video is well done and informative. If you weren't sure about mobile devices as a possible channel for learning then maybe you should ...