Personalizatio n wasn't supposed to be a cleverly veiled way to chase prospects around the web, showing them the same spammy ad for the same lame stuff as everyone else sees. No, it is a chance to differentiate at a human scale, to use behavior as the most important clue about what people want and more important, what they need.
Seth GodinThe wettest, weirdest environment is human interaction. Whatever we build gets misunderstood, corroded and chronic, and it happens quickly and in unpredictable ways. That's one reason why the web is so fascinating-it's a collision between the analytic world of code and wet world of people.
Seth Godin