I've had a bit of difficulty keeping up lately. One cause among many: Facebook! (see Tim Agazio's remarks here. I concur with a lot of what you say, Tim!) I do enjoy the networking among folks with similar interests, but it can get out of hand
I actually did find people that I actually know on Facebook. That fact and George Geder's recent posts about his school days led me to post this photo:
That's me and a high school friend I hadn't seen or heard from in over 35 years until I noticed she's on Facebook. It was fun to re-connect and get caught up.
Like Tim, I got into Facebook primarily because I want to participate in the Unclaimed Persons group. But I haven't had time, what with all the Friend requests, Karma sending, updating status, etc.! I'm going to have to be more efficient at this.
From a research point of view, I see a number of advantages, though, to Facebook. The collaboration that goes on in the Unclaimed Persons group is a good example. I wrote once about an ad hoc group that convened by email to solve a problem in one of the family lines we were all researching. Facebook would have enhanced that experience.
I searched on Facebook to find possible cousins, but I didn't find this all that helpful. I did the same thing on LinkedIn and that seemed much easier.
The thing we have to keep in mind is that social networking is a tool, and not an end in itself. Otherwise, one could spend an entire lifetime with only virtual contact with human beings. On to Second Life!
And finally, in the category of keeping up with the Geders, take a look at this: