Earlier quoted context omitted.
Pretty amazing that this is precisely what Microsoft paid for Hotmail in 1998 : $400 million for 10 million users = $40 / User. [1] The parallels are striking : Whatsapp is to messaging today what Hotmail was to messaging in the late '90s. [1] http://news.cnet.com/2100-1033-206717.html
I'll admit to a distinct feeling, that I've started to lose touch with pop technology. I've never heard of WhatsApp. Though I had most definitely heard of Hotmail in 1998.
- people (especially preteens) with an iPod Touch or iPad Mini but not a smartphone/texting plan
- people with internationally distributed friends
- Android users who want iMessage functionality (friendly long messages, delivery confirmation, read receipts, sane group conversations, etc)