To keep its decade-old social network lively, Facebook is introducing five big changes to user profiles, which are viewed 4 billion times per day.<br />Such as the option to pin Featured Photos to the top of the profile, temporary profile pics, easier visibility controls for "About" info including a new 100 character Bio field, A mobile-centric design with centered profile photos plus big sections for photos and friends and the best one, The ability to use a 7-second looping video as your profile pic.<br />The features begin rolling out and testing today for some users.<br />Together, these changes should make Facebook more visually stimulating and addicting.<br />As other networks like Twitter introduce auto-play video like Facebook did, and Snapchat adds animated selfie lenses and its own profile GIFs, Facebook has to stay a step ahead in the graphic arms race.