Definition - What does Filter Bubble mean?
Personalized search results from Google and personalized news stream from Facebook are two perfect examples of this phenomenon.
Techopedia explains Filter Bubble
Pariser relates a case in which a user searches for "BP" on Google and gets investment news regarding British Petroleum as the search result, while another user receives details on the Deepwater Horizon oil spill for the same keyword. These two search results are noticeably different, and could affect the searchers' impression of the news surrounding the British Petroleum company. According to Pariser, this bubble impact could have adverse effects for social discourse. However, others say the impact is negligible.