Lest anyone think all I can do is complain, I do like the refinement ability on Footnote.com. I am sure there are improvements that can be made, but the ability in the Beta Test of Advanced Search at Footnote.com currently allows for one to narrow the search from the results page as shown above on the image (left hand column).The image below shows what happened when I clicked on a specific search parameter in the above search results page at Footnote.com.
We'll be posting more of our experiences with advanced search as time allows. I am glad to see improvements and changes being made!