I hear the argument that teenagers aren't on Facebook any more, they are now on Snapchat, Instagram etc. It always seems like their argument implies that teens

I hear the argument that teenagers aren't on Facebook any more, they are now on Snapchat, Instagram etc. It always seems like their argument implies that teens use a single social network. I would guess that many teens use multiple social media platforms. Facebook has over a billion users, there's likely a few teenagers hanging around.