Yahoo, contrary to their claims, blocks, censors and removes comments far worse than Facebook and Twitter did. If you do not walk in lockstep with their policies, don't bother commenting these days, they disappear with little notification. There's no way to appeal, no responses to any questions and over all a total scam. I've reached the end of my use with Yahoo and will be transitioning to a different service for emails and news articles that allow comments.
