At Stanford in the fall of 2007, B. J. Fogg offered what became known as the Facebook Class:
Almost overnight, the Facebook Class fired up the careers and fortunes of more than two dozen students and teachers here. It also helped to pioneer a new model of entrepreneurship that has upturned the tech establishment: the lean start-up.
“Everything was happening so fast,” recalls Joachim De Lombaert, now 23. His team’s app netted $3,000 a day and morphed into a company that later sold for a six-figure sum.
[...]
Early on, the Facebook Class became a microcosm of Silicon Valley. Working in teams of three, the 75 students created apps that collectively had 16 million users in just 10 weeks. Many of those apps were sort of silly: Mr. De Lombaert’s, for example, allowed users to send “hotness” points to Facebook friends. Yet during the term, the apps, free for users, generated roughly $1 million in advertising revenue.