By now, it's become commonplace for most of us. We conduct an online search, view a product on a webpage, and the next thing we know, ads are popping up for the same and similar products every time we go online, whether we're on our desktop, laptop, tablet, or mobile device. The world of contextualized ads-or ads that are delivered to individuals based on some context-is exploding. Technology is driving the explosion and making possible some seemingly impossible things.
Steve is a freelance writer based in San Francisco.
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