Facebook will expand its Audience Network, which serves ads on apps and websites beyond its own, to reach people who don't have Facebook accounts or aren't signed in, according to a report in Ad Age. "Previously, Facebook Audience Network could only serve ads to signed-in Facebook users. That played well enough to one of Facebook's strengths with marketers: It knows exactly who is seeing its ads, on its properties or elsewhere, and an awful lot about them. But Facebook was still getting valuable information about non-users whenever they visited sites with Facebook technology -- think of the 'Like' button around the web -- without being able to capitalize. The move to change that is a direct shot at Google's AdSense network, not to mention all the other players observing and targeting consumers."