Does anyone have stats on usage of google.com over say google.co.uk in the UK? A client has asked for a breakdown of how many people or % and why people in the UK would use google.com rather than google.co.uk or why people in China would use google.com instead of google.cn? Are there any official stats on this? Thanks
Its not easy task to get the statistics of how many use which location SE. might be that people in UK might be loving with result they get with search engine in US
I never head about such a tool or service, and I personally think there is no official stats as well..! You should monitor your website traffic sources and maybe check the Webmaster Tools: Top Search Queries based on local servers and percentage shown for you top 20 searched / clicked keywords.
I don't see exact what you're looking for but I think you are looking on something like this: http://www.langreiter.com/exec/yahoo-vs-google.html?q=cars
I don't know about the other countries, but in Canada if you type google.com it automatically goes to google.ca, and you have to actually click "go to google.com" at the bottom of the page to get there.