“I’m absolutely in touch with everyone in my life that I want to be in touch with,” Arwood says. “I don’t need to share triviality with someone that I might have known for six months 12 years ago.”…

Len Kleinrock, 77, says Facebook is fine for his grandchildren, but it’s not for him.

“I do not want more distractions,” he says. “As it is, I am deluged with email. My friends and colleagues have ready access to me and I don’t really want another service that I would feel obliged to check into on a frequent basis.”

Kleinrock says his resistance is generational, but discomfort with technology isn’t a factor…

“I’m having a `been-there, done-that’ feeling,” Kleinrock says. “There’s not a need on my part for reaching out and finding new social groups to interact with. I have trouble keeping up with those I’m involved with now.”