It does not work correctly out of the box if you are in the U.S. Did not test other sites (as I am obviously not using them). It not only ignores the category you're wanting to view (bad if you have a search term that has different results in different categories), but it directs you to the UK site by default rather than your own site. Perhaps some editing of the script would fix this part, but as it stands, the script is useless.