Categories

Hi guys,

I am in the last stages of developing a categories plugin, which at the moment allows you to file content under categories and subcategories, and subcategories of subcategories, and so on infinitely.

I am wondering what your ideas about categories? What would you want to achieve with such a plugin on your site? What objects would you like to be able to file?

Would you use categories as an easy navigation tool? or a search tool?