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.
At the very least, it's a testament to the ubiquity of Facebook, which now has well over 300 million members around the world.
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