One important difference between the information tsunami and the watery one is what each leaves behind.
The sea wave destroys everything it touches, but the electronic flood does the opposite. It preserves everything.
Killer@Craigslist, a fascinating article in the October 2009 issue of Vanity Fair, lays out the evidence.
Last April a woman and a man met cute (actually, mercenary, not cute) in Boston. They hooked up through ads on Craigslist. The woman died and the man was charged with murdering her. Police made the case by following the cyber footprints of their communication.
Dear reader, you live a much more virtuous life than anyone Vanity Fair writes about, I am certain. So you don't need to worry about where your cyber footprints lead. Right?