Aaaaand we’re back! With our Thanksgiving mini-hiatus behind us, it’s time for another edition of Week in Review — the newsletter where we quickly wrap up the most read TechCrunch stories from the past seven(ish) days. No matter how busy you are, it should give you a pretty good idea of what people were talking about in tech this week. Want it in your inbox every Saturday morning? Sign up here. most read Instafest goes instaviral: You’ve probably been to a great music festival before. But have you been to one made just for you? Probably not. Instafest, a web…