The US Amazon storefront is our default redirect for most countries around the world that don't have their own Amazon storefront. It has the largest selection and the best international shipping. European nations are the primary exception to this behavior, with many countries being passed along to the UK, as you'll see below.
It may seem strange that clicks from South Korea, Singapore, New Zealand, and Taiwan all end up at Amazon.com instead of their neighboring storefront, but that's the way our default is set for now.
If you'd like to influence this behavior, you can always edit an individual link's destinations using Advanced Rules.
the Netherlands (their Amazon storefront only features books and is not a part of the Amazon Associates program)
United Kingdom (Amazon.co.uk)
United States (Amazon.com)
Every other country that isn't listed above!
If you live in Europe and feel strongly that we're redirecting your country to the wrong storefront, please let us know!