Three years ago, Panini America officials launched the #PaniniWildCard Twitter promotion as a way to celebrate the excitement of the NFL playoffs while rewarding loyal fans with free boxes of trading cards. In the 36 months since, #PaniniWildCard has become an undeniable Twitter sensation, enriching the real-time playoff experiences for fans and collectors of the NFL, NBA and more. #PaniniWildCard has generated, among other…