Remember back when everyone thought Evan Spiegel was insane for turning down Facebook’s $3 billion offer to acquire Snapchat? Well, I’m sure Spiegel is laughing as he counts the money that Snapchat is reportedly raising right now that will value the company at a whopping $19 billion. Considering how the app itself brings in virtually no revenue, why the hell are investors so happy to throw money at Snapchat? The answer may surprise you.