You have a certain identity that you present to the world on Facebook, and you have a certain identity that you present with the telephone, and they are different.
WhatsApp provides phone-number-based messaging, and people asked, 'Isn't that what SMS is?' Yes, but SMS is expensive, antiquated, and what WhatsApp did was modernize and level that playing field. For example, in Europe, if France wants to talk to Belgium, it's extraordinary costly because of border and telecom charges.
Going public is 18-month process, while an acquisition is a 6-month process. Going public means going under so much scrutiny, regulatory approval, auditing, magnified 10 times. Having the stomach to do that isn't necessarily in my DNA. My DNA is building a product and a service.
We're the most atypical Silicon Valley company you'll come across. We were founded by thirty something; we focused on business sustainability and revenue rather than getting big fast, we've been incognito almost all the time, we're mobile first, and we're global first.