If you’re a regular Facebook user, you might have come across adverts where their friends are included in the advert. If you’ve got a Facebook application installed or you’ve become a “fan” of a corporate Facebook page, you consent to your name being used to endorse the company in adverts on the Facebook website.
Some people won’t like the fact that their name and photo is being used to endorse a commercial product without their express consent. If you belong in this group, opt out of being in Facebook ads.
Go to Settings -> Privacy -> News Feed and Wall -> Facebook Ads -> Appearance in Facebook Ads and select “no one”.
Thanks to reader Ryan for the tip.