“YIK YAK, DON’T COME BACK” is the message ricocheting through the internet this week. The anonymous social media app is taking college campuses by storm--but may be contributing to cyberbullying. Campuses such as Clemson University are considering restrictions on the application's use on campus. And will such measures stop or even slow Yik Yak’s widespread use? (And no, Coke won’t help.)