I came across a nice site, Visual Thesaurus, which is unfortunately not free-access! But offers a few trial goes. It reminded me of the TouchGraph feature in HubMed. I’m not sure how useful these things are, but they interest me.
I’m still keen on introducing a relationship function on the TRIP Database. I see it working like Amazon’s ‘People who bought this….’. So it’s be something like ‘People who viewed this article also looked at these’. However, as with the visualisation features above I’m not sure how useful it’d be!