I am Gossip Boy. I've seen every episode, yes even the reboot. From all great media, we can learn something (if we care to look). I care, my name's Dan, and this is Gossip Girl, The Marketing Millennials marketing lessons reboot.   1️⃣ The Scarcity Principle: Just like Blair Waldorf's exclusive headbands (chic), create a sense of scarcity...