I have a client who has 3 ecommerce sites. They are somewhat differentiated but for the most part sell the same stuff. Luckily 2 of them are quite authoritative, old and rank reasonably well. Most of the visitors and sales come from the US. He wants to start targeting Europe, Mexico and Canada. What are your suggestions for doing this? Are we better targeting on the main domains? Not really sure how to do that? Should we use a subdomain and a new store front for each geo? Should we use a .co.uk .co.mx and .co.ca each with a unique storefront? It looks like we are moving to a Magento platform so setting up multiple storefronts on a single database is not a big issue. Anyone have any experience with this?