What Do Boomers Know About Social Networks?

I’m about to drive downtown to speak at the Boomer Business Summit on a panel about social networks and blogs for boomers. This is definitely foreign territory for me. The main boomers I know are my parents and their friends. So how are boomers using social networks? I know that both my parents are on Facebook and use the site regularly. I don’t think they are the average boomer though.