I got an invite from them a few weeks ago. They tried to stroke my ego by proclaiming me a "gold" member or some-such. I laughed because in my head I heard the voice of young George Bailey in "It's a Wonderful Life" bragging to Mary, "I've been accepted for membership in The National Geographic Society."
I haven't got time to watch the videos now so tossed it. Good to know that many of you are happy with it though.