You're fired! 3 terminally stupid user tricks

You know what's really taken for granted? Common sense. It's a subtle attribute that often heads off bad situations. Usually you don't notice when it's there -- but you definitely miss it when it's absent.Cameron Diaz Gisele Bundchen Renee Zellweger Carson Palmer Michelle Wie Reese Witherspoon Bill O\\\\\\\\\\\\\\\'Reilly Kate Moss Diane Sawyer Sean (Diddy) Combs