"Fact checking" sites
An interesting article from NPR. Basically, most people prefer the sites that are clearly partisan to those which purport to be nonpartisan. I suppose there would be two things driving this. (1) We all like to hear our views reinforced. (2) You're probably more likely to approximate the truth by reading avowedly partisan views of both sides. The supposedly nonpartisan fact check sites may tend to be too much like the MSM, objective only in their own eyes, as the battle over the NRA TV ads indicates.