"Buy this, you don't even know you need it" is basically the foundation of American consumerism. It's the concept behind dandruff shampoos, pet rocks, and desig

"Buy this, you don't even know you need it" is basically the foundation of American consumerism. It's the concept behind dandruff shampoos, pet rocks, and designer clothing. BTW, Amazon's revenue dwarfs Facebook's but Facebook made more profit last year than Amazon ($1 billion vs. $900 million).