Unfriend is Word of the Year
The New Oxford American Dictionary word of the year for 2009 is “unfriend,” defined as “To remove someone as a ‘friend’ on a social networking site such as Facebook.”
In context, “He was spamming me with ‘Mafia Wars’ notifications so I decided to unfriend him.” Or, “She filled her journal with Polish nude photography links so I had to unfriend her at work.” Or, “I posted that Obama bowing video and all the Democrats unfriended me.”
Michael B. Duff 