When Facebook fails, everybody hears about it -- we like to call it 'social sharing.' Here are some of its biggest failures
The Beacon debacle
Introduced in the fall of 2007, Beacon was Facebook's first attempt to share user info with the Web at large, and it remains possibly its biggest faceplant. Simply put, Beacon took your activity on certain non-Facebook sites and broadcast it to your Facebook posse. So if you bought movie tickets at Fandango, it would tell all your peeps, even if you weren't logged into Facebook at the time. But while you could opt out of broadcasting your purchases, researchers at CA discovered that Facebook was still recording your activities and, worse, capturing info from people who had never signed up for Facebook. Several lawsuits later, Facebook shut off the Beacon for good (though similar concepts would re-emerge in other ways).