The Chrome team has set up something called the Chrome Frame, which allows other browsers to use the HTML5 engine from other browsers automagically, based on a meta HTML tag. The video: Introducing Google Chrome Frame has more details. I assume you must have to configure IE to use the plugin, and wouldn't someone geeky enough to do that just use Chrome anyway? I guess the exception would be if you're required to use it for work/site access or something, but if they're that strict, they probably restrict you adding in plugins to IE all willy-nilly and higgledy-piggledy.