Discontinued - Superceeded by IE 9
Accelerators give you a quick way to complete common web tasks...
How many steps does it take with your current browser to find a map for a street address, translate a word, or perform other routine online tasks? It probably involves cutting and pasting information from one webpage to another. But there's a better way. Accelerators in Internet Explorer 8 help you quickly perform your everyday browsing tasks without having to navigate to other websites to get things done. Simply highlight text from any webpage, and then click the blue Accelerator button that appears above your selection to get driving directions, translate and define words, email content to others, search with ease, and more. For example, using the "Map with Bing" Accelerator in Internet Explorer 8, you can get an in-place view of a map displayed directly on the page.
Not as bad as I thought, with a bit of effort, web designers can get a pretty decent experience out of it. This rating is input with IE9 running in IE8 Compatibility mode :). Pros: Its not so bad for its age. Cons: Still miles away from Chrome and Firefox.
Horrible speed. Get Chrome or Firefox.