Two years ago today I found myself on BBC’s Newsnight sitting in front of Jeremy Paxman at 11.10pm. Twenty minutes earlier I’d been in a pub in Shoreditch, relaxing after work on a Friday night. Two pints and one G&T in, I was alerted that Facebook had bought WhatsApp for $19bn, one of the biggest startup acquisitions in history. Newsnight’s Producer rang me and asked me to get in a