Facebook will use Whatsapp users' personal data to target ads

Two years after its acquisition by Facebook, WhatsApp is changing its privacy policy to allow it to share more information about its mobile app users with its owner.There's no risk of your WhatsApp messages appearing on your Facebook timeline, or status updates being sent to your WhatsApp friends, the companies say -- but they will be sharing more user data behind the scenes in order to better target advertising and suggest new contacts across the two services.WhatsApp has long promoted itself a