AP lays down some social networking lawsFinally your nightsweats over whether "unfriend" or "defriend" is correct are over: The AP Stylebook has laid out 42 new guidelines for the language of social media. (P.S.: It's "unfriend.") A bunch of acronyms made the cut (like "POS," a sneaky tween term for "Parent Over Shoulder"), as did "retweet" and "trending." Oh, and "fan," "friend" and "follow" can now all be used as both nouns and verbs. It's all part of the AP's never-ending quest to verb every noun out there. (See what we just did?) (Mashable)