If it’s advertised to you online, you probably shouldn’t buy it. Here’s why
Julia Angwin writes: Tech firms track nearly every click from website to website, develop detailed profiles of your interests and desires and make that data available to advertisers. That’s why you get those creepy ads in your Instagram feed or on websites that seem to know what you were just talking about. The ability to track people has turned out to be an unbeatable advantage for the online ad industry, which has grown to a $540 billion market worldwide, according…