Read about it on Ftrain:
(the blog proprietor, Paul Ford, "conceptualized, programmed, and designed [it], under the management of Harper's senior editor Roger D. Hodge")
Lots of other good stuff to read about there too, by the way.
So, you think it's a clever way to make the Index bloggable, right?
Symantic Webs sound clever and interesting when Ftrain describes them, anyway.
As to how well they really work, I have no idea, and haven't had the chance yet to try and find out.
I know Clay Shirky had a long skeptical piece on the semantic web recently. A bit of googling should turn it up. I read most of it and it was pretty convincing, but I"d like to see a working application that people think shows off the semantic web to good effect.
Yep, I read Shirky's piece a while back and it seemed convincing, and then I read Ftrain's response (http://www.ftrain.com/ContraShirky.html) and it also seemed convincing.
Basically I just don't know enough or have enough experience to really judge who has the better argument. Ftrain says the Harper's site as a primitive example of a semantic web framework, so I look forward to playing around with it to get a clearer idea on the subject.