Who uses email? According to the New York Times, it's the same people who "still watch movies on a VCR, listen to vinyl records, and shoot photos on film." At left, Comscore, the Internet rating agency, graphs the startling demographic split in email use. The drop is sharpest among the Internet generation, while email use by those over 55 showed a sharp uptick, perhaps reflecting the fact that more and more, ahem, old people are getting on line. Total email use is falling too. The Times says the total number of unique US visitors to major e-mail sites like Yahoo and Hotmail peaked in November,...