Craig Alexander Newmark was born on 6 December 1952 in Morristown, New Jersey. Craig is a senior Web-oriented software engineer, with around twenty-five years of experience (including 18 years at IBM), and has become a leader in online community by virtue of running www.craigslist.org for over 9 years.

Newmark attended Morristown High School. Upon graduation he attended college at Case Western Reserve University.

Newmark is a vocal advocate of keeping the Internet free. He has donated $10,000 to a non-profit group, NewAssignment.Net, which plans to combine the work of amateurs and professionals to produce investigative stories on the Internet.

Newmark resides in San Francisco's Cole Valley and is active at craigslist in customer service, mostly dealing with spammers and scammers. He puts in at least 40 hours a week on customer service. "I'm just a customer service rep. My two biggest projects are dealing with misbehaving apartment brokers in New York and lightly moderating our discussion boards" - he says.

Craig has been featured in the Associated Press, the Wall Street Journal, the New York Times, Los Angeles Times, USA Today, Business Week, Time Magazine, and Esquire Magazine.