Custom Properties is just a very flexible system for creating and assigning tags, making it possible to classify your site's content in many ways outside the rigid Section/Category structure. I have just scraped the surface of possible uses, and loving it already.

The Search module offers website users an easy and flexible way of drilling down into specific content, perfect if you have a more complicated content classification.

The frontend tag editing possibility by assigned users is another added bonus.

This component's only problem is that it makes the webmaster think about the site's content organisation in a completely different way :-)

Great component, excellent coding and very helpful developers. Star stuff!