alt.fiftyplus - join
General topics of discussion by persons over 50.
High activity, 305 subscribers, Usenet

alt.fifty-plus.friends - join
For mature penpals and discussion
High activity, 776 subscribers, Usenet

soc.senior.issues - join
Issues relevant to seniors and aging.
High activity, 340 subscribers, Usenet

soc.retirement - join
For seniors: retirement, aging, gerontology issues.
High activity, 1416 subscribers, Usenet

soc.senior.health+fitness - join
Health, fitness, health-care for seniors.
Low activity, 86 subscribers, Usenet

alt.penpals.forty-plus-yrs - join
Medium activity, 363 subscribers, Usenet

Senior Citizens - join
Group for Senior Citizens to meet new friends and engage in friendly discussions.
Low activity, 77 members

alt.america - join
Created by a British cluebag; probably now has USA talk.
Low activity, 55 subscribers, Usenet

alt.california - join
The state and the state of mind.
High activity, 382 subscribers, Usenet

alt.penpals.50-plus - join
Low activity, 109 subscribers, Usenet