https://www.reuters.com/article/us-facebook-advertising/facebook-to-train-u-s-businesses-on-ads-after-russia-scandal-idUSKBN1D92M3 >Facebook Inc Chief Executive Mark Zuckerberg is kicking off an effort to get U.S. small businesses to spend more on advertising as the image of the social media network's ads have taken a hit for their role in alleged Russian attempts to sway U.S. voters.