Complete self-centeredness. It is like Twitter -- some people think anyone (or everyone) gives a $hit about the fact he/she is at the doughnut shop.
I keep the tiniest footprint possible in the Interwebz. As FD2003, yeah, I get around. As my RL name, just a few business sites and even then with no personal information.
Really, who gives a sh*t who's at a donut shop or that someone made an omelet with 3 eggs instead of 4. Fools that friend me on FB and post inane drivel like that are quickly de-friended. Twitter is a farce as well.
I'm with you regarding a tiny cyberspace footprint.