Did you wake up this morning to find that dozens of your page's Facebook Likes mysteriously vanished overnight? You're not alone! Many Facebook page managers noticed a significant drop in their brand’s Facebook likes numbers last week (and those that haven't seen it yet can expect to in the next few weeks, according to Facebook's blog.) While this sudden plunge may alarming, the change shouldn’t be seen as a major setback – and we'll explain why. So where did the fans go? Fac