Older, Wiser, and Wired
http://www.stc.org/intercom/PDFs/2003/200312_12-14.pdf

Mazur, Beth and Amy Lee
Intercom
2003

Abstract:

A February 2003 Harris Poll indicates that nearly half of those over age fifty in the United States—approximately 36 million adults—are online. While international statistics vary; the implication is clear: Designing usable Web sites that serve the needs and preferences of older adults will be a requirement, not a nicety, for the future.