25 Feb 11
04 Dec 12 3:37 am
"Poke" in Facebook is equal to a "nudge" in Yahoo Messanger. When you send someone a "poke " in Facebook, a message is sent to the person saying you poked them, then they have an option to reply back to you with a message or send back a poke.
I'm not sure if that is still in use or popular in Facebook though.
Hope that helps. Have a good day!