It is being reported that Yahoo! Mail has disabled the ability for users to enable email forwarding. If you already have the feature enabled, you might be fine. But if not, there's no turning it on now. Conspiracy theorists say it's a play to keep people from leaving Yahoo. I'm not so sure. Is anything ever that simple? What do you think? Read more about it at TechCrunch or Fortune.
Update (October 14, 2016): Yahoo! Mail forwarding has been restored.