Hands-on with IE 8: A giant step for Microsoft The Download Blog - Download.com:
"Setting aside the issue of speed for a moment, some of the features in Internet Explorer bring it up to what we've come to expect from a browser, and some of them forge ahead. Many of these are borrowed from other browsers, and at least in the case of Firefox, the features can be imported using extensions. Indeed, some of Microsoft's bigger innovations like Web slices and Accelerators were replicated via Firefox extensions a while back."