I want to use more than 1 set of tags. In fact, I would like to create 3 category groups of tags for content that are separate and separately searchable (like a facet). What is the best way to achieve this?

I couldn't find a good place to ask this question so I asked it here figuring it would get your attention, and it did

I figured you might know about an extension that did this that worked with your extensions. Or perhaps a future extension for you?