yik yak
Most college officials surveyed say they monitor social media feeds.
Campus activism is frequently met with online harassment.
The Missouri student arrested this week after making threats via the app wasn't the first to be unmasked.
Threats are swirling on campus. Students are being called racial slurs. The problems are far from solved.
WHAT'S HAPPENING
Looks like Marco Rubio was the winner, at least according to Wednesday night's "yaks."
Students see Yik Yak as a safe place to express themselves.
The company warns people against posting things they wouldn't send to their mother.