I for one, made my birthday invisible or should I say private on my Facebook account because I hate my wall being flooded with greetings and also I really only want those people who really remmebered my birthday to greet me without Facebook notifying or reminding them that it's my birthday. I just think that it feels like we are obliged to greet them because of the notification. Don't get me wrong, I want people to greet me but I appreciate it more when I know that they really remembered my birthday without Facebook notifying them.