http://www.politifact.com/truth-o-meter/article/2015/apr/22/new-research-politics-fact-checking-shows-growth-a/
sigh.
However, "The studies also found that the amount of fact-checking journalism produced by American media has increased significantly in recent years." Yay! (And it's about time.)
This is also posted at http://elainegrey.dreamwidth.org/558819.html .