A lot of people wondered why Facebook paid so much money for WhatsApp.
WhatsApp is 100% social, and you don’t have companies in your phone book. Many companies and online services would love to send you messages in your WhatsApp box while it’s free messaging. But they can’t.
What if customers could drop their mobile number at any online site or mobile app via their Facebook login and stay in control over the permission they gave you as a service?
Customers can even withdraw their permission before you even send a message. This is my take on what Facebook could do.