Does the same layout and similar content "blackhat"two sites?

I have a site that covers merchants in the U.K. and USA.
The details of the content for each merchant is of course different.  
But the layout and the content headings is the same for ALL merchants.
Currently you can choose to go to the US merchants or to the UK merchants.
I would like to split the merchants into one website for the US with its own url and one for the UK with its own url.
I would then have effectively two identical sites with the other editorial content being mirrored on each site.
The only difference would be the details in each merchant record.
Will Google and Bing (Yahoo) see these as duplicated sites and blackhat them.
Very important question for me.
Thanks
digiselAsked:
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dave4dlCommented:
No they will not.  I have two sites that are identical except for some sync lag and both google and bing listed them.  One is our dev web server and I actually did not want google to list it so I had to figure out a way to prevent that (used isapi redirects to serve different robots.txt on the dev server so I could continue to have the same files on both sites).
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digiselAuthor Commented:
thanks for your input.
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