David, it really does range widely. I'd say it starts with late 20s, and has a good number of people in 30s, 40s, 50s, and 60s... Maybe even higher. I think if I was under 25, it might not be for me, as everyone just seemed soooo old back then. But now I'm in my early 30s, I love chatting to all sorts of people, and realise that they have really interesting things to say, that I'll never have experienced.