Last week, Zuck's line was that over 99 percent of content on Facebook is authentic. Now, he still maintains that there is only a "small" amount of misinformation, but outlines seven points describing programs the company is implementing in response. That includes plans we'd previously heard about to cut off income for fake news sites from its advertising program, and making it easier to report fake news stories when they pop up.

Another point that seems easy to implement is raising the bar for posts that pop up in "related stories." The last point listed says Zuckerberg will be listening to journalists about best practices for fact checking, which is good, because we have ideas.