Hi Sasha, I've noticed your site on the web before and have read several of your articles with interest. I am impressed that you were in on the inner workings of the firefly algorithms for collaborative filtering. Hubs are web pages with lots of links related to a single topic.
Authorities are web pages pointed to by many hubs.
This seems to me an excellent beginning toward identifying the symbols of the semantic web. All this is excellent. InterMix cannot handle it simply because we don't have the programming staff to make it happen. As I see it, collaborative filtering is mediated by the attributes of the objects in question. So it is useful to have a measure of how amusing each article is.