Yes, Smiley, I did that with Facebook, when I first got on it. Our daughter talked me into signing in and registering with Facebook, so that we could keep track of our grandson who was in South Africa at the time several years ago. I then forgot all about it, and when our daughter came from Spokane, she helped me get it started, inviting friends, including them, and so on. It was my account, but Carol did everything with it, so I got credit whether it was good or bad, because my name was the only one on it. It then got too complicated to suit her with too many friends and posts, so she got her own, and then a little later she got rid of her's and came back to mine, adding her name to it. I was fairly active for a while, but with all these projects I have been working on it got too time consuming for me, so now she is the one who does the facebooking. I quickly read sometimes, but that is all I do.
You are right I think about what happens to people who register, and yes they would find injoyment if they would just get on and do some posting! All the rest of us would love seeing their presence as well!