How much do you pay for Google searches? For Yahoo! email? The revenue model is going to be something that is roughly similar to the ones we have with any num

How much do you pay for Google searches? For Yahoo! email? The revenue model is going to be something that is roughly similar to the ones we have with any number of "freemium" type services. My bet is that there is going to be a certification track that complements the online course delivery. I've seen this with industry certifications (JNCIE, CCIE are ones I'm familiar with) and that the cost to get "certified" will be fairly substantial. It'll also require physical presence and some practical demonstration of competence. For math, I'd expect a traditional sit-down exam. For CS, probably some combination of programming exercise and exam. I don't know how this will work for the humanities. And one other thing considering the cost argument: paying for the production of a video lecture and the hosting of the content for hundreds of thousands is going to be a fraction of the cost of paying even a grad student to give a lecture on-campus.