Google.com is an entirely different beast from Google.co.uk — and webmasters have taken the time to discuss some interesting observations on the .co.uk end.

Some are seeing results jumping around with major reshuffling. On a related note, some are seeing the same but are getting results only for very long tail searches.

Another observes issues with geotargeting. The specific scenario:

Forum members also observe and believe that Google.co.uk is using click-through data. That’s interesting. I guess people know how to rank better, then!

Forum discussion continues at WebmasterWorld.