When the internet was young and innocent, it was acceptable to "finger" college classmates. These days, a simple Facebook "poke" can land you in jail, in Tennessee, and CNN has say "alleged" poking, because, hey, libel. Granted, Shannon Jackson, the accused, was under court order not to communicate

...

http://valleywag.gawker.com/5381749/arrest-over-facebook-poke-makes-meaningless-gesture-risque