Me, that is.
One thing social networks do very well is keep people connected together who may not have been connected at all before. It used to be that only those closest to you would know when your birthday was. Now entering it into your Facebook profile means that all sorts of people that you're just a little connected to know it.
Some people criticize social networks for replacing significant connection with trivial ones, that they're the fast food of relationships, edging out meaningful interactions with empty friendship calories. I find them instead to be a supporting structure: the information and connection they offer is a scaffolding on which to build, and can keep you connected with people that you otherwise wouldn't be able to stay in touch with.
I woke this morning to find I already had a dozen good wishes from people around the world, including at least one I had never communicated with before. What could be bad about that?