Say good-bye to the horror of logging on to your computer after a night out only to find pictures of yourself with your fist wrapped around a beer, sweat gleaming on your forehead and your mouth forming a cry of "wooo!" -- the Gods of Facebook have deigned to let us approve photos before they get tagged.
According to Lifehacker:
Before, when someone tagged you in a photo or a post, that tag would just show up. Now, you can choose to approve or reject when other people tag you, before anyone else sees you tagged in it.
In a way, it takes the thrill out of drunkenly posing for pictures. But in another way, it just saved everyone their dignity.