Identity : why do teens seem strange online?
Privacy : why do youth share so publicly?
Addiction : what makes teens obsessed with social media?
Danger : are sexual predators lurking everywhere?
Bullying : is social media amplifying meanness and cruelty?
Inequality : can social media resolve social divisions?
Literacy : are today's youth digital natives?
Searching for a public of their own
Appendix. Teen demographics.