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simonuk - 4:08 pm on Feb 2, 2009 (gmt 0)
I have the same as you, Site A is my main .com site and Site B is my co.uk live/test/play site. It has different carts, different SEO etc compared to the main one but I never link to the .com in case the co.uk ever gets a negative hit. As for the $$ all I would say is for the sake of a few extra pound a month you'll get a UK site on a UK server and I would imagine that as long as everything else on the site is clear and blackhat free you'll see a increase in the SERP's. As you saw from my previous post I haven't gone down the USA server route for a few years and my rankings have never been as strong. Not 100% evidence I know but it's enough for me to keep things as they are :-)
claaarky it certainlly sounds like you're on the ball. I agree that 10-25 a week isn't a lot and although it may water down PR I don't believe it would be a big cause of your problem.