Google search gets even better

Google searchI've previously mentioned an enhancement to the Google search results with items about Burger King being grouped appropriately (still don't quite know how that happens). This time we were searching for the word "lupus" (work related but not in any serious manner) and Google came up trumps again, this time slightly differently.

Along with the standard result set it had a series of "sub-categories". Lupus is a disease and the relevant sub-categories were, "Treatment", "Symptoms", "Test/diagnosis" and the like. Now that's cool. This time I know how it happens, sites are categorising their content in a Google-friendly manner using Google Co-Op and obviously Google is using that as a starting place to group the rest of the Web - nice.
Try it for yourself: lupus - Google Search

They're also running Co-Op programs for destination destination guides, autos, computer & video games, photo & video equipment, and stereo & home theater.

I am impressed how the Google ethos of 70% research/effort/expenditure goes on search and particularly focussing on making results more relevant (the ultimate is find the smallest results set that satisfies your need). As I mentioned previously this is where Google generate their revenue and so the more relevant the results the more money they make - search isn't, of course, just about the Google Search site and is key, for instance, to their AdSense program. I also like the way that they have been obviously working hard at this but have kept the opposition focused on the other 30% (Gmail, Google Calendar ...)