About one third (32%) of all American teenagers who use the internet say they have been targets of a range of annoying and potentially menacing online activities – such as receiving threatening messages; having their private emails or text messages forwarded without consent; having an embarrassing picture posted without permission; or having rumors about them spread online.
http://www.pewinternet.org/PPF/r/216/report_display.asp
Cyberbullying and Online Teens
About one third (32%) of all American teenagers who use the internet say they have been targets of a range of annoying and potentially menacing online activities – such as receiving threatening messages; having their private emails or text messages forwarded without consent; having an embarrassing picture posted without permission; or having rumors about them spread online.