extract from Wikipedia to Color Code Untrustworthy Text in Wired Science
drawing on the original feature by Hadley Legatt in Science Notes
... Text from questionable sources starts out with a bright orange background, while text from trusted authors gets a lighter shade. As more people view and edit the new text, it gradually gains more “trust” and turns from orange to white.
“They’ve hit on the fundamentally Darwinian nature of Wikipedia,” said Wikipedia software developer and neuroscientist Virgil Griffith of the California Institute of Technology, who was not involved in the project. “Everyone’s injecting random crap into Wikipedia, and what people agree with more often sticks around. Crap that people don’t like goes away.” ...