At the prompting of some church associates, I have launched into yet another Internet domain: Facebook.com. This is a "social networking" site, made popular as a gathering place for young people, typically of university age.
There appears to be room for some of us senior citizens, too. There are groups for amateur radio, politics, religion, and other areas of life.
Yale Alumni and student hams: Note that we have a W1YU Group. (You will need to be a member of the "Yale Network" to join. For that you will need a *.yale.edu email address, which alumni can get from the AYA: aya.yale.edu, specifically, here.)