Facets and tagging: whatever happened to innovation?

I wonder what happened to the innovation in tagging. The stuff I did with Mefeedia was somewhat innovative I think. Here are some screenshots (it’s no longer live):

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We organized tags into facets (see above, this just took a few hours of organizing the top 1000 tags), and then built an inference engine (which was pretty easy to do):

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It worked like this: if the tag “josh leo” (a person) is used together with the tag “new york”, we can infere that Josh has been to New York.

Which goes to show that with very little metadata you can do a lot of cool stuff.