Welcome to this morning's edition of "First To Know," a series in which we keep you in the know on what's happening in the digital world.
Today, we're looking at three particularly interesting stories. Six-second video-sharing service Vine has reached the tippity-top of the U.S. App Store’s free iPhone app listing. JCPenney has ousted its CEO. And, we’ve got two viral internet activities for your viewing pleasure.
Check out the video above for more on these stories.