Google also allows you to target ads to specific ages and sexes. Pretty much any ad platform does. Prior to the online age, list rental agencies would let you

Google also allows you to target ads to specific ages and sexes. Pretty much any ad platform does. Prior to the online age, list rental agencies would let you filter by those attributes. I remember an old manager adding Republicans in affluent zip codes to his catalog mailing. I think that many people don't understand how customer information is brokered. This isn't new, just recently greatly expanded upon.