I enjoyed this Forbes article by Parmy Olson sharing some of the behind-the-scenes storyline to the Facebook-WhatsApp acquisition. I do all my messaging on iMessage, SMS, and Twitter (and Whisper during nerd conferences), so when I first read about the $19 billion deal it was with just about zero knowledge of what WhatsApp was and how big it was. Olson’s article gives a lot of context to the service.