I would love to see it. Being able to talk with someone over Whatsapp but not actually having it installed.

I’ve always been surprised with the success of Whatsapp. The fact that it’s tied to a phone number and not an email always seemed like an odd choice to me. I feel that a phone number is much more volatile since people change phone numbers a bit frequently, and will then not transfer their old chats to a new number and lose contacts as a result.