One-third (32%) of all 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.
The Pew Internet & American Life Project. (2007). Cyberbullying and Online Teens. Washington, DC: Author. http://www.pewinternet.org/PPF/r/216/report_display.asp