With end-to-end encryption they won't be able to read the content of your posts. However, I guess they can tell who you spoke with and when, so it adds to Faceb

With end-to-end encryption they won't be able to read the content of your posts. However, I guess they can tell who you spoke with and when, so it adds to Facebook's social graph. I can imagine Facebook advertisers eventually being able to push messages to WhatsApp.