Malak Silmi was taking her first real journalism class last January when her professor said something thatchanged her life: Watch what you post on social media because it might just come back to bite you.

Silmi's Twitter account at the time was one she'd had since she was 14. It was a public profile with her content ranging from memes and status updates to opinions on foreign policy. But she decided something had to change if she wanted to be taken seriously as a journalist. So, she deactivated it.

"I understand the need to censor oneself, but sometimes I don't think it's fair," said the 19-year-old. "Even liking on Twitter is hard because people can see what you like — it pops up on their timeline even if they're not looking through your account."

National Public Radio