Under the new user agreement, WhatsApp will share the phone numbers of people using the service with Facebook, along with analytics such as what devices and operating systems are being used. Previously, no information passed between the two, a stance more in line with WhatsApp’s original sales pitch as a privacy oasis.
Wired: WhatsApp’s Privacy Cred Just Took a Big Hit »
“Only at the end do you realize the power of the Dark Side.”