That may change now that I've tried out , an IE accelerator that's genuinely useful. With just a couple clicks, it looks up definitions of any word or phrase you highlight in the browser.

To install, just visit the link in the preceding paragraph, then click Add to Internet Explorer. Presto, you're done--you don't even have to restart IE. (Take that, Firefox!)

Now, when you highlight a word or phrase, you'll see a little blue-white arrow appear next to it. Click it, then mouse over All Accelerators. In the pop-up list that appears, mouse over Define with Bing--you'll then see a pop-up box with an abbreviated collection of related information.

Alternately, if you click Define with Bing instead of just mousing over it, IE will open a new tab with a more complete list of definitions (from sources like Encarta, Wikipedia, and the Web at large).

Very handy, no? Actually, this add-on would be a lot handier if it appeared in the primary Accelerators menu, so you didn't have to navigate into the All Accelerators sub-menu. Here's how to accomplish that: