Chris D'Elia and the rise of Twitter as a platform to call out sexual predators

Comedian Chris D'Elia first noticed Michaela Coletta's Instagram photos years ago, when she was 17, according to the now 25-year-old. He took the opportunity to DM her. 

"He noticed I liked some of his photos on Instagram and immediately started messaging me," Coletta told Mashable. "From my Instagram photos, you could...