Yahoo! has added the ability to preview your GMail from within their MyYahoo! portal page. The module is now available alongside their usual Yahoo! & Netscape mail previews. It really only makes good business sense to me, but they certainly took their time publishing it...

"The GMail module allows users to preview their messages and also click on links in the module to go directly to the Google GMail interface. This is nice for users like me who prefer GMail to Yahoo Mail, but still use My Yahoo! as my start page for Yahoo! Sports, Finance and other Yahoo offerings."