I fear the main contenders are likely to scrap the excellent Yahoo mail.

Time to figure out how to backup and migrate 8 years of emails and move all services using this account for login to a new address.

The more time I spend on the 'net the more I am convinced everyone needs to own their own email address and be "portable" as services implode or are discontinued. This includes calendar, address book and anything else. Even with Gmail, if Google doesn't like you it's "poof" and everything is gone.