So, I went into spy-mode on Uber, AirBNB & Dropbox and I discovered something everyone should know... Their #1 traffic strategy that hardly anyone uses besides them. It's what helped them grow to 4 million customers in 15 months (3900% growth). Crazy... So once I saw this, I started experimenting as well. It's called viral marketing. Not the kind of viral marketing that you'd expect, so it doesn't involve any viral videos or anything like that. In a nutshell, It's basically creating an army of p