If you're interested in learning about the companies that provide Google, Yahoo, MSN, Mapquest and many others the data for their digital map services, a Newsweek article: It's the Road Now Taken, offers an overview of the two companies that provide most of the data, Navteq and Tele Atlas. You'll also read about the people who drive around updating each companies database.
Thanks to Directions for the tip.

Introducing SES Online
Want to view one of the sessions you missed or listen to an especially informative presenter a second time? SES New York sessions are available for purchase on ClickZ Academy's new e-Learning site. SES is now Online!
