I think there is some validity to that idea, but there isn't a wall around Spain blocking all .es websites from being accessed outside too. Here's an example, for yahoo.ca (Canada), you can search in french language. You can search "all the web", or "french language sites", or "canada sites". I am sure a lot of .fr (France) sites get picked up under "french language sites", so there you will have French speaking canadians finding sites from France. Then they become familiar with the .fr domain extension and may try some type ins for french word sites, and it leads on and on. In advanced search you can or will be able to get returns for websites with only .ca or .fr or .es extension. It's too early to tell for sure but there should be some cross over traffic for different countries that speak the same language.