More than 1 Word but still relevant to this thread
NEW YORK (AP/1010 WINS) -- What word sums up the year 2009?
Unfriend
That's the New Oxford American Dictionary's 2009 Word of the Year. It means to remove someone as a friend on a social networking site such as Facebook.
Finalists for 2009 also included
Sexting
the sending of sexually explicit texts and pictures by cell phone.