RSS feed for complete site collection or a full web

Scenario:
By default , sharepoint comes with the option to expose RSS feed for any list or document library , which is good in so many ways.But one of the most common requirement is RSS for full web or may be for full site collection.

Workaround:
1. Create a new page.
2. Drop a Content Query Webpart
3. Edit the webpart properties
4. Add the filtering / grouping crieteria for the items of interest. I chose all documents from site collection added or modified today.
5. Under presentation, I choose to Enable RSS feed for the webpart with proper title for my RSS feed.
6. You will see a RSS feed icon for the webpart.
7. Subscribe by clicking it or pass the url to anyone who is interested in this RSS feed.

Note:
1. This will only work with MOSS as CQWP is not available in WSS
2. Dont delete the webpart as Url is tied to webpart, so if webpart is deleted , rss will also not work.

Article:
http://msdn.microsoft.com/en-us/library/bb608445.aspx