Finding a group policy when starting at the “is there even a setting?” ground zero can be tricky, especially in operating systems older than Vista that do not include filtering.
Microsoft has made available is a new service in the cloud viz. Group Policy Search, powered by Windows Azure platform.
With the help of Group Policy Search you can easily find existing Group Policies and share them with your colleagues.
The site also contains a Search Provider for Internet Explorer 7 and Internet Explorer 8 as well as a Search Connector for Windows 7.
UPDATE: The Microsoft Group Policy Search Service has been now updated for Windows 8 & Windows Server 2012.