If you're making determinations on whether to show an ad to someone based on their age, you're literally discriminating based on age. Like, that's the definitio

If you're making determinations on whether to show an ad to someone based on their age, you're literally discriminating based on age. Like, that's the definition of the word. You're treating different categories of things (i.e. people) differently based on a characteristic (i.e. age). Not only are you discriminating, you're discriminating against a protected class. Now to handle your absurd question about sending credit card ads to children: Facebook policies already cover this. From Facebook's advertising policies: Facebook prohibits advertisers from using our ads products to discriminate against people. This means that advertisers may not (1) use our audience selection tools to (a) wrongfully target specific groups of people for advertising (see Advertising Policy 7.1 on Targeting), or (b) wrongfully exclude specific groups of people from seeing their ads; or (2) include discriminatory content in their ads. Advertisers are also required to comply with applicable laws that prohibit discrimination (see Advertising Policy 4.2 on Illegal Products or Services). These include laws that prohibit discriminating against groups of people in connection with, for example, offers of housing, employment, and credit. --- Obviously not sending ads to 12 years wouldn't be wrongful discrimination, since minors can't enter into legally binding contracts. But to be clear, not sending ads to 12 years is discrimination. It's just not considered wrongful.