Millions of websites now employ social login, driven by the fact that the old site-specific registration and password system is no longer scalable.

FORBES: How Social Login Is Changing Business--and Your Privacy

Probably more work is needed there, especially in trusting, older demographics, but we need a similar awareness gain around internet password and registration habits.

ENGADGET: Editorial: Countering ID theft requires better awareness campaigns

But more than 10, 000 Web sites now recognize a service called Facebook Connect, which enables users to use their Facebook ID and password to move fluidly among sites where registration is required.

FORBES: Facebook: A privacy round-up