Turns out Microsoft isn't the only one concerned about Google's Chrome Frame, an extension which embeds Google's Chrome browser in Internet Explorer. Emerging as an unlikely supporter in Microsoft's corner, Mike Shaver, VP of Engineering for Mozilla, added his thoughts in a blog post.

"Running Chrome Frame within IE makes many of the browser application's features non-functional, or less effective," Shaver wrote. ""These include private browsing mode or their other security controls, features like accelerators or add-ons that operate on the content area, or even accessibility support."

Shaver when on to say that the users would be "seriously hindered" in understanding the web's security model and how their browser operates. A better solution, says Shaver, is if Frame-friendly sites explained to users that their site worked better in Chrome.

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