> I like Facebook to keep up with friends who I don't get to see very often...For example, I literally haven't seen some of my high school friends since we graduated 22 years ago, but I know all about their kids and families and their recent successes at their jobs.

Why is that so useful though? If they were really important to you personally, you'd have kept in (active) touch with them. If you don't live in the same town as them, then you're not likely to encounter these people outside of a reunion.

I'm not trolling or criticizing, I'm genuinely curious why "staying in touch" in this way is so valued. I can see the value of LinkedIn (it's always possible you may develop business or professional relationships with passing acquaintances from your past and I take care to prune my connections occasionally) but the draw of FB is a bit mysterious to me.

I've also gone 20+ years not seeing friends from high school and college. I suppose I could be more informed about their lives, and they about mine, if I were sharing that stuff on Facebook. But I also think that if any of us really cared, we'd take the time to make a call or send an email every once in a while. A few of us do, but mostly we don't. If that effort is too much, how important is the friendship?

Facebook to me feels like those xeroxed summary-of-my-fantastic-year letters that some people stick in their Christmas cards. Mildly interesting, maybe, but also kind of tacky and pretty impersonal and low effort.