Same domain name with different tld - view by Google?

[simstar]

I currently own a .co.uk domain which i have run for about 2 years now. I have now bought the .net version of the domain and view this as a better opportunity to reach the US market than with the .co.uk.

If I were to create a site with different content and design would google view this as ok seen as I run the .co.uk version of the domain?

I don't want to lose my .co.uk's rankings for what google may view as spamming. Both sites will be about the same subject but they will be totally seperate and unique. Will google consider this as ok?

thanks

[tedster]

different content and design would google view this as ok

Certainly - what would be your concern?