>Somewhere along the line the presence feature got dropped, and now we're always 'Available' even when we're not.
Before you were only available when you had your PC on, you were connected to the Internet, and your IM program was open. Now you carry your perpetually running IM program in your perpetually on and perpetually connected mobile in your pocket.
Before you were only available when you had your PC on, you were connected to the Internet, and your IM program was open. Now you carry your perpetually running IM program in your perpetually on and perpetually connected mobile in your pocket.