How does Google make so much #@#$ without charging us?

Wired magazine just published an article about the search engine industry by Chris Anderson, the author of "the long tail", called "Free". The article goes into how Google pioneered the use of Cross subsidy advertising to provide unbelievable service to its customers for FREE. It also explains why Google keeps giving us more stuff like google earth, google docs, and Grand Central (Someone click the Call me button!) all for free. Check out the article its well worth the read.