To date, Snapchat hasn't shown any more data to its biggest users than its everyday audience -- DJ Khaled and Chrissy Teigen probably know as much about their success as you do. That's about to change. The Snap team will offer a wide range of viewer data to the "tens of thousands" of popular users creating official Stories. That includes not only the views themselves (including how many people watched to the end), but demographics like age group, gender, regions and preferred topics. If creators are hip with the teens or have the beauty market cornered, they'll know.