Update: There is very little chances to get gems. For the amount of for the good choices. 17 is a lot when you only get 4 gems every 2 min for a advertisement that you only get for several chances then have to wait more then 10 hours to get the videos back. And some stories cost more than 1 reading ticket. U can share to friends but who has more than 5 these days. U have to share to 10 friends to get 10 gems each time. The code lasts 7 days.