Geo Targeting Content Question

[TheMuffinMan]

Hi, all

First question here so be gentle, please

My question is around geo targeted dynamic content; at the moment we run a .com domain with, for example, an article about running headphones and then at the end - taking up about 40% of the content - is a review of some people can buy, with affiliate links. We have a .co.uk site with the same page about running headphones and then 10 headphones for the UK market. Note: rel alternative is used on the pages to point to each other, therefore (hopefully) removing duplicate content issues.

This design works well but it involves having to build links to two pages, in the case of this example. What we are thinking of doing is to just use the .com domain and having the product page of the page served dynamically, ie, people in the UK see UK products and people in US see US products.

What are people's thoughts on this technique, please?  From my understanding, it wouldn't be any problem with Google for cloaking etc because a googlebot and a human from the same country will see the same content.

The site is made in Wordpress and has <....html lang="en-US"> (for the .com) in the header. Would this cause problems for the page ranking in the UK etc?

The ultimate goal of doing this would be to reduce link building efforts by halving the number of pages which links would have to be built for.

I welcome any feedback. Many thanks