Facebook says it’s bringing more data into its interest-based ad targeting — specifically data from non-Facebook websites and mobile apps.
So even if your profile doesn’t say anything about your love of (say) soccer, and even if you haven’t Liked any soccer-related Pages on Facebook, the social network can still see that you’ve visited soccer-related websites and target ads accordingly.
In a blog post, the company describes this as “a type of interest-based advertising” that’s already practiced by “many companies”:
Let’s say that you’re thinking about buying a new TV, and you start researching TVs on the web and in mobile apps. We may show you ads for deals on a TV to help you get the best price or other brands to consider. And because we think you’re interested in electronics, we may show you ads for other electronics in the future, like speakers or a game console to…
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