I gave in and joined Facebook. I'm astonished at the high level of activity that some folks seem to be able to maintain. I have a very boring profile: I added a few applications; some people seem to have dozens. I haven't added much personal information. People apparently send lots of messages and post on each other's profiles. I'm going to have to remember to check it, on top of checking other places where I do my sharing and connect with folks (LinkedIn, LibraryThing, flickr). Still, I think it will be good to have another place to try to maintain contact.