Andrew Watts is a student at UT Austin and he wrote a great piece on Medium called "A Teenager's View on Social Media." In it, he described where teenagers hang out online and why.
I think what's fascinating to me about his quote is what he's watching. Not only does he know the number of his friend's Instagram followers and Facebook friends, he knows the engagement she gets on both platforms.
This is the norm.
A high schooler will delete a photo she's placed on Instagram if it doesn't get X number of likes in the first hour.
Teens are coaching each other on through a ton of YouTube videos on how to tweak your Tumblr posts to gain more followers. #followforfollow is a popular hashtag used across networks as essentially early affiliate marketing.
This is what happens when you have a generation who has grown up as content creators.
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https://medium.com/backchannel/a-teenagers-view-on-social-media-1df945c09ac...)