0 a situation in which someone only hears or sees news and information that supports what they already believe and like, especially a situation created on the internet as a result of algorithms (= sets of rules) that choose the results of someone's searches:
A filter bubble – a term coined by Internet activist Eli Pariser – is a state of intellectual isolation that allegedly can result from personalized searches.
Filter bubbles create echo chambers: we assume that everyone thinks like us, and we forget that other perspectives exist.
Your social circle, your work circle, and your neighbourhood all act as filter bubbles too.
After the unexpected election outcome, there was a surge of interest in filter bubbles and the role they might have played.