indyank - 8:12 am on Aug 6, 2012 (gmt 0)
I have made a post on this here more than a year ago. This is a very common practice with very high authority sites. The information architecture is laid out exactly as stated by Andem and these search result pages (which are infact carefully created from several related keyword phrases) are the prime entry pages for their search engine traffic. However, this is an age old practice and not something which is just a few months.
Andem, another thing you would see is these auto-generated search result pages (generated from a bunch of related key phrases) with url structure as you mentioned, would interlink to other similar search result pages as "Related searches" using those same bunch of related key phrases. They also somehow manage to automatically generate unique titles and meta descriptions for these groups of pages and these titles and meta descriptions differ only by one or two words in most cases.
If they have say 15 to 20 products for the primary keyword "widget" they would list these products in random sort orders for each of those related search result pages with titles like "widget for ...", "....of widgets" etc.
They continue to flourish after all these changes by google in the last one year and their traffic only seem to have sky rocketed.
austtr, I agree with you that this kind of site architecture and navigation is very common in some niches and they have been given a real traffic boost after Panda.These are professionally designed high authority sites and that seem to help rank their auto generated search result pages.