The private side of social media is expanding, but not without some controversy.

The private side of social media is expanding, but not without some controversy. Cyber-bullying ran rampant on the new app Yik Yak as middle school and high school students caught on to its localized message-boards. But the app's latest round of funding has afforded new features like geo-fencing and a 17+ age requirement that aim to keep its use within the intended college-age audience. (TechCrunch)