"For many people -- particularly anyone over the age of 30 -- the idea of describing your blow-by-blow activities in such detail is absurd. Why would you subject your friends to your daily minutiae? And conversely, how much of their trivia can you absorb? The growth of ambient intimacy can seem like modern narcissism taken to a new, supermetabolic extreme -- the ultimate expression of a generation of celebrity-addled youths who believe their every utterance is fascinating and ought to be shared with the world.
This is the paradox of ambient awareness. Each little update -- each individual bit of social information -- is insignificant on its own, even supremely mundane. But taken together, over time, the little snippets coalesce into a surprisingly sophisticated portrait of your friends' and family members' lives, like thousands of dots making a pointillist painting. This was never before possible, because in the real world, no friend would bother to call you up and detail the sandwiches she was eating. The ambient information becomes like 'a type of E.S.P.,' as Haley described it to me, an invisible dimension floating over everyday life."
-Brave New World of Digital Intimacy-