What is Google? What do they sell?

Don Norman on Google:

They have lots of people, lots of servers, they have Android, they have Google Docs, they just bought Motorola. Most people would say ‘we’re the users, and the product is advertising’. But in fact the advertisers are the users and you are the product.

They say their goal is to gather all the knowledge in the world in one place, but really their goal is to gather all of the people in the world and sell them.