This is extremely dangerous and will result only in political correctness and conventional  thinking totally dominating the internet. After all, many if not most people will hit the "fake news" flag if they disagree with the substance of an article. And remember - - much if not most real "fake news" comes from official sources. Remember the "slam dunk" proof that Saddam Heussein had WMD? Fake news. That most Iraqis would welcome U.S. troops? Fake news. That Russia had "invaded" Georgia? Fake news. (Check the European Union report.) It's also nonsensical to allow chatter-brains on social media to determine the parameters of discussion when the topic is controversial social issues. The upshot is that the entire internet will turn into the kind of mindless, radical pablum we now see on many college campuses.