People who saw your sponsored stories or ads with social info about people and Pages they’re connected to on Facebook. These connections may have Liked your Page, responded to an event or used your app. If you’re not using sponsored stories or advertising a Page, event or app, you won’t have Social Reach. The number of people your ad was shown to with social information. For example, if 3 people see an ad 2 times each that says a friend likes your Page, it counts as 3 social reaches.