I mean...c'mon! The New Oxford American Dictionary picked "Unfriend" as its word of the year

Perhaps in a sign of how the plague of social media has numbed us all to the value of legitimate human connections, the New Oxford American Dictionary has picked the verb "unfriend," or "to remove someone as a 'friend' on a social networking site such as Facebook" as its 2009 Word of the Year. - Caroline McCarthy, CNET

I agree with Caroline here.

From the Oxford University Press Blog:

“It has both currency and potential longevity,” notes Christine Lindberg, Senior Lexicographer for Oxford’s US dictionary program. “In the online social networking context, its meaning is understood, so its adoption as a modern verb form makes this an interesting choice for Word of the Year. Most “un-” prefixed words are adjectives (unacceptable, unpleasant), and there are certainly some familiar “un-” verbs (uncap, unpack), but “unfriend” is different from the norm. It assumes a verb sense of “friend” that is really not used (at least not since maybe the 17th century!). Unfriend has real lex-appeal.”