I can't possibly imagine me EVER using this - but nevertheless, If someone uses Chrome (or might use Chrome), but they do like Bing, and would like to have that new tab page with its option to sign in and gain easy access to their Outlook Mail and Word online - if they also like those things, then why not? Giving your users the option to integrate other companies products with yours, and even make them the default action is what makes you great. If someone likes one, or some, of your products, that is still no reason to try to force them to use all of your products. But if you can make yours more appealing, then that is even better. Google Search is better, in my opinion, and integrates far better with all my other stuff - but it is still nice to have options...even if you never use them.