Well, most of the courses listed are VC$, meaning they are free, but you can pay for certification. I am guessing universities and Coursera are just placing exp

Well, most of the courses listed are VC$, meaning they are free, but you can pay for certification. I am guessing universities and Coursera are just placing experimental bets on this pay-for-certification model for casual learners, in the hopes that it might eventually make some money (I hope it does!).