Update: Matt Lorenzen, VP of kallout has left a comment. You can contact him for any queries on Kallout
KallOut is a small utility for Windows which integrates into popular desktop programs such as Outlook, Adobe Acrobat, Word, Excel, PowerPoint, Internet Explorer and Firefox and lets you search the web for text found there. It’s a software utility and Web service that lets you kick off a Web search from any word in almost any app.
All you have to do is select some text and wait half a second, and an icon appears on your screen that lets you pop up a Kallout search menu. Similar utilities are built into some browsers, but Kallout works across all apps.
Kallout embeds searches for Google, Yahoo, Windows Live Search, Wikipedia, Dictionary.com, IMDB, Amazon, Craiglist, eBay, Flickr, Photobucket, YouTube, Metacafe, Google Maps, Virtual Earth, and dozens more into a simple right click menu that is accessible in programs outside your web browser.