I should be able to sign into facebook with my atariage account. Also, I should be able to unlock my neighbor's Mazda Protege with my roller skate keys. Just because.
Contrary to what the real "digital natives" seem to think, not everything has to be connected. It's like those people who logged in to AtariAge via Twitter and had their tweets appear here in the status updates. Who thought that was a useful feature?!?