Filter bubble

With the rise of personalized recommendations and news feeds on the Internet, availability bias has become a more and more pernicious problem. Online this model is called the filter bubble, a term coined by author Eli Pariser, who wrote a book on it with the same name. Because of availability bias, you're likely to click on things you're already familiar with, and so Google, Facebook, and many other companies tend to show you more of what they think you already know and like. Since there are only so many items they can show you—only so many links on page one of the search results—they therefore filter out links they think you are unlikely to click on, such as opposing viewpoints, effectively placing you in a bubble.