I think someone is reading their tweets. And it's their parents. That is why teens avoid it, it is way easy for their parents to know everything. With Facebook

I think someone is reading their tweets. And it's their parents. That is why teens avoid it, it is way easy for their parents to know everything. With Facebook you don't need to share everything with your parents, and the world, even if your parents are your friends. To me that has to be the main difference.