Anybody ever used the Secunia Software Inspector?

Feature Overview - The Secunia Software Inspector:
* Detects insecure versions of applications installed
* Verifies that all Microsoft patches are applied
* Assists you in updating your system and applications
* Runs through your browser. No installation or download is required
http://secunia.com/software_inspector/

It "sounds" like a good idea...I'll have to try it on my home PC.