Re: Yahoo have officially disabled email forwarding
Although I enjoy a conspiracy theory this does not really stand-up.
If you plan to move to another email provider and just want to keep your yahoo email going while your new address gets established then check what services the new provider offers. Most support a way to collect your messages from another server using POP/SMTP and it should be just as good as forwarding. As I understand it, for either forwarding or collecting emails to work you would need to keep your account active ... if anyone knows different please let me know.
Since the great data breach in Sept most people have not changed their passwords and would have no idea such a thing as automatic forwarding exists .... this would mean the downside of leaving the background forwarding option available would be to leave those users exposed to being hacked and the crims setting-up feeds of their messages un-noticed and then allowing them to steal the identities of, possibly, millions of people.
Having said all the above I think Yahoo are criminally negligent regarding atrocious data security and as the US lawyers sharpen their billion-dollar pens and prepare some bankrupting lawsuits we may all need to think about where we move our email to in future ... just a guess.