AllSides gives BuzzFeed News a Left media bias rating.
An editorial review by the AllSides team in September 2018 found that Buzzfeed News never includes a Right-leaning opinion or perspective. In July 2019, another editorial review concluded that BuzzFeed deserved a Left rating based on its infrequent inclusion of right-leaning perspectives and occasional misrepresentation of facts to support leftist points of view.
Before AllSides changed the rating in July 2019, roughly 4,400 AllSides readers agreed with the media bias rating of Lean Left, while roughly 6,700 disagreed. The 2014 Pew Research Study, Where News Audiences Fit on the Political Spectrum, found "those on the left of the ideological spectrum are overrepresented in [BuzzFeed's] audience (59%, compared with 38% of all respondents)." [Source: Pew]
BuzzFeed is a website that combines a technology platform for detecting viral content with an editorial selection process to provide a snapshot of "the viral web in realtime." It was co-founded in 2006 by Jonah Peretti (who is also co-founder of The Huffington Post). In 2012, Ben Smith of POLITICO was hired as editor-in-chief.