YMail also lets you sign in with GMail. Obv, we're all aware of the Mayer connection, but it's still a curious move. What's Yahoo's play here? "Users." Okay, but what's the play? Cast aside all notions of vanity, and keep your eye on what you really want? (To train eyes on their content portal?) (Can it really be the case that Y.com is last man standing in the portal wars? Huh!)