This week Yahoo Mail has added the ability to (easily) add a Gmail account for email forwarding. They've also got the ability to add Outlook emails, and if you're in the mood, an infinite loop with all other email addresses. If, for whatever reason, you'd like to create an unending loop of emails, all you'll need to do is add one forwarding service to the next, then that same service to the next, and on and on back to the point at which you started. Every email capable of adding POP3 addresses can become part of this giant game of digital telephone. But that's not why you'd actually want to use your Gmail account inside Yahoo Mail - nay!