On Facebook, the Cardinals have added more than 12,000 new fans to its page since last Monday. The Cardinals have about 1.3 million fans on Facebook. On Twitter, more than 14,000 followers have added the Cardinals to their feeds, increasing the Cardinals’ total follower count to 198,054. The Cardinals are also making inroads on Instagram, the popular photo-sharing application. The Cardinals’ Instagram account has grown 427 percent from 980 followers on Sept. 18 to 5,162 followers, according to Watermon.