Cyber Monday might have been a chance for Facebook to start making big money, not with a holiday gimmick but one that will last all year. With more than a billion users, Facebook has always provided a box called "Happy Birthday." Clicking it to send a greeting was free. Now, for some users, the box has been replaced with "Give a Gift," and clicking it could cost you money. Ellis Hamburger reports on Facebook and other social media services for TheVerge.com.