ABC News investigated where teens are spending their time online if not Facebook. Brian Solis studies what captures their time and attention and shared his top list with Joanna Stern.

This isn’t bad news for Facebook. The company owns Instagram and shelled out $1 billion for it in April 2012. Brian Solis, a principal analyst at Altimeter Group, says be believes Mark Zuckerberg and Facebook’s lead executives knew they would need help with the younger market at the time and that was the impetus behind the purchase.

“Facebook realized it needed not just a mobile future, but also a future for this younger or teen audience,” Solis told ABC News.

Solis also mentioned AskFM as a popular teen hangout. This social network allows users to pose questions to one another and is similar in design to Reddit threads.

See the full list here…