This is good, particularly if you are lazy to search an "e-mail conversation". You have saved a file on your hard disk, but forgot where exactly and now you desperately want to search it. The conventional windows program is too slow for it. Google's "Desktop Search" searches almost everything on your computer. It's Good Utility; bringing down the most famous and top ranked internet search engine to search your own computer.
If the link is not working, copy and paste the following in your browser and hit go: http://desktop.google.com