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In some respects, I hope it works as positioning in av uk has been easier (for us uk-based sites) than av.com.
Keep watching the referred traffic to see is their is a boost from av.uk
oldtimer - i've been trying to fathom brillo and still not sure. I thought brillo might have been visiting to remove from the database for other reasons (spam removal).
From what you suggest, perhaps it is the "great uk shift"