Don Norman, the author of The Design of Everyday Things, on Google:

Is Google simple? No. Google is deceptive. It hides all the complexity by simply showing one search box on the main page. The main difference, is that if you want to do anything else, the other search engines let you do it from their home pages, whereas Google makes you search through other, much more complex pages. Why aren’t many of these just linked together? Why isn’t Google a unified application? Why are there so many odd, apparently free-standing services?

Speaking at dConstruct conference, Don Norman:

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.