When invitations to LinkedIn and Orkut started coming along, I joined up, and (on Orkut) even proactively signed up to be friends with some people I knew who were already there. But I never figured out what it was all for. Maybe I’m wrong, maybe these are the first symptoms of something big. Today, I look at my inbox and see a few more invites and you know, it just isn’t worth the time to go hit the sites and click on “Yes” or “No.” So if it looks like I’m ignoring your invitation I am; but don’t take it personally.