Got a website that works best in a standards compliant browser? Your users may be using older versions of Internet Explorer, and not willing to change for one reason or another. Perhaps they aren't allowed to use another browser due to domain restrictions, or perhaps they just don't want to switch.
<meta http-equiv="X-UA-Compatible" content="ie=edge,chrome=1">
As a webmaster, you can use this simple meta tag that the new stable release of Google Chrome Frame can detect, and if present, will render the page using Google Chrome rather than Internet Explorer. This gives users the appearance of using IE, but the speed and standards compliance, and security of Chrome.
Unfortunately, installing the Chrome Frame doesn't automatically make your Internet Explorer use Chrome to render webpages -- it's still up to webmasters to specify that their website should use Google Chrome Frame if present.
As the web moves to HTML5, and begins using more advanced features that aren't supported in older versions of Internet Explorer, users are going to have to either upgrade to IE9 (which is still really buggy -- but it's forgivable as it's still beta) or install Chrome Frame. I am not convinced that this product is going to solve everyone's problems though -- mainly because it requires action from both end users, and from webmasters in general.
What do you think? Do you still use IE? If so, would you use Chrome Frame? If you're a webmaster, are you going to add the meta tag to your website?