Annie's friend + Internet scene at the end

When Annie's friend comes up to her in the hall at school and says she is sorry Annie assumes she's talking about her dad beating up the innocent man at the volleyball game. Then her friend says she's talking about the "Internet thing" and that she had nothing to do with it. Annie runs to the library and turns on a computer, looks horrified then runs out. In the next scene Annie tries to kill herself.

So what was posted online??

These kids today, with their hula hoops and fax machines.