I've written in the past about the idea of ambient intimacy (here and here), and I certainly value the opportunity to connect with friends via The Longest Run, facebook, etc.
The Wall Street Journal covers a new iteration of sharing online in The New Examined Life: Why more people are spilling the statistics of their lives on the Web.
Beautiful graph of the smallest details of a guy's life here. Nice tools to do the same for yourself at Daytum and mycrocosm. But perhaps things have gone too far....bedpost.