Delete any number that will make your plasma explode if dialed randomly . Gmail has a quick fix for an email gone awry : Well , Facebook actually has a little-known feature that allows you to take those friend requests back -- you know , after the hilarity dies down and you realize that since you did n't want to be friends with that kid who chewed incessantly on his jacket collar in middle school in middle school , you certainly do n't want to befriend the grown-up version now . The Undo Button . Social sobriety test : requires users to pass a test before they can access social media .
Delete any number that will make your plasma explode if dialed randomly . Gmail has a quick fix for an email gone awry : The Undo Button . Social sobriety test : requires users to pass a test before they can access social media .