Many miss the invisible feature on Facebook. Unlike Yahoo and Gmail, facebook doesn't have a direct log in to INVISIBLE option. It must be annoying to people who have many people online and are flooded with chat messages every time they login. Some are in no mood to chat but, want to see who among his/her friends are online. So, one can get invisible(appear offline) to certain group of friends or to your whole friends list. The best part is you can always avoid those whom you might not want to have a chat.
