@bagder Tracking (by which I guess you mean attribution in this case) makes the ads much more effective because the next set of ads can be targeted more precisely to people who might want to see them. More effective ads makes them cheaper for the advertiser, which means that a small business actually can reach new customers economically. And that also means that people will see fewer irrelevant/spammy ads. It’s a tradeoff many don’t like, but it’s not just evil profiteering.