Inventor of Amazon's Mechanical Turk and now head of Walmart Labs, Rajaraman is one of the smartest in Silicon Valley.
Rajaraman turned down a chance to buy Google. Twice.
Sean Moeller becomes a powerful music executive, largely by accident.
A discussion with The Economist's Martin Giles about Google and Facebook in Europe. Plus plane sex.
Kevin Brown of Coraid helps the world store a staggering amount of information.
The Google exec turned rebel leader looks back on Egypt a year after the revolution.