Summers, impressed by her work in his Harvard economics class, became her adviser and took her along when he joined the World Bank.

CNN: Facebook's Sheryl Sandberg suddenly in crossfire

At Fort Riley, Kansas, U.S. soldiers training for a mission in Iraq stopped briefly last week to attend a memorial for Sgt. 1st Class John Scott Stephens, an adviser who had been killed in Iraq.

NPR: Training the Trainers at Fort Riley

Charles Mitchell, City's chairman, was revered for turning City into one of the country's biggest banks and a trusted adviser to the expanding middle class.

ECONOMIST: How Ferdinand Pecora won the blame game

But it was only when the FBI raided his home in 2006 and his PhD adviser suggested that he take a law class that Dr Soghoian decided to concentrate on the intersection between computing and the law.

ECONOMIST: Brain scan

The Iraqis left their posts because they felt they received second-class treatment when they arrived from Baghdad, the American adviser said Monday.

CNN: Police adviser: Snafu in Najaf

All of that means Facebook users are already in the habit of sharing their personal details and activities with other users on the site by default, and only opting out of the sharing functions for certain actions they want to keep private, says David McClure, an adviser to start-ups and guest lecturer at Stanford who teaches a class on Facebook.

FORBES: Facebook's Overblown Privacy Problems