Okay, I did find another social network I wanted to join online.  Geni is a family-oriented application, and you can use it to collaboratively build your family tree. I don’t know if it can handle the complexities of the Chua clan (my grandmother led a complicated life! ;) ), but it isn’t a bad way to start. The good thing about it is that it doesn’t rely on everyone opting in, because you can fill in other people’s details. And once you’ve gotten your family tree in place, you can share photos, look up birthdays, send messages, announce events, that sort of thing.

Check it out!