At first look, BostonTribune.com certainly seems a trustworthy source. So does KMT11.com. And ABCNews.com.co. Even 24wpn.com has an official ring to it. But all of these websites peddle bogus stories, either by making up fake news or sharing it from other sources. And it’s not always apparent to readers that’s the case. Since December, we at PolitiFact have been partnering with Facebook to root out fabricated reports shared by social media users. As of April 19, we’ve written more than 80 fact-checks about fake news stories. We’ve noted some trends along the way, chief among them that it can be …