Keet was riding the bus and saw a man wearing a new pair of shoes from his favorite brand. He liked them but thought they'd look better in black. When he got home, he went online and found them in black at an online store, Zaps. They were pretty expensive, so he decided to post a picture of them on his social media account to see what his friends would think. The next day, he started seeing ads for the exact shoes and for the online store he had visited. He saw the ads appear when he typed in a search, when he went to his favorite news site, and when he was scrolling through his social media feed. At first he thought it might've just been a coincidence, but when it kept happening, he started to wonder, why am I seeing this everywhere? 1.How did the advertising company know he was interested in those shoes? Or in that store?
2.If Keet didn't want to be tracked by the advertising company, what could he have done differently?