Mr. Kremen estimated his net worth at $10 million. That puts him firmly in the top half of 1 percent among Americans, according to wealth data from the Federal Reserve, but barely in the top echelons in affluent towns like Palo Alto, Menlo Park and Atherton. So he logs 60- to 80-hour workweeks because, he said, he does not think he has nearly enough money to ease up.
“You're nobody here at $10 million,” Mr. Kremen said earnestly over a glass of pinot noir at an upscale wine bar here.
http://www.nytimes.com/2007/08/05/technology/05rich.html?hp&_r=0