Yup. The 'site' function is also good for those of us trying to find schwag to buy in non-US countries.

So one can, for example, type in 'ultegra cassette 12-27 site:.co.uk' and it'll only return results from servers whose names end in '.co.uk' - this actually works better than using google.co.uk and definitely better than the search boxes in the corners of many browsers which inevitably use the American versions of search engines.

Only problem is some UK shops have .com addresses anyway.