Have you used it, it's actually very very good......
It runs a mini indexing/web server on your machine which can only be accessed through the loop-back address (unless you do routing trickery).
It's extremly quick, replaces the need for the find option in Outlook and the history function in your browser + it also stores a little screen dump of the webpages visited which is displayed when searching your internet history.
Try it, you can alway uninstall it.
Tri1stan