Feel Free to Jack Into My IPod

Wired.com:During his regular evening walk, software executive Steve Crandall often nods a polite greeting to other iPod users he passes: He easily spots the distinctive white earbuds threaded from pocket to ears.

But while quietly enjoying some chamber music one evening in August, Crandall's polite nodding protocol was rudely shattered.
Crandall was boldly approached by another iPod user, a 30ish woman bopping enthusiastically to some high-energy tune.
"She walked right up to me and got within my comfort field," Crandall stammered. "I was taken aback. She pulled out the earbuds on her iPod and indicated the jack with her eyes." Warily unplugging his own earbuds, Crandall gingerly plugged them into the woman's iPod, and was greeted by a rush of techno...

This is an awsome article on how people with iPods do.