I just tried to insert a link to http://www.amazon.co.uk/gp/product/B00ILALU9G into a thread. I used the syntax {url=http://www.amazon.co.uk/gp/product/B00ILALU9G}Title{/url} (but with square brackets) which resulted in this.
When clicked, that link goes to amazon.com instead of amazon.co.uk, and since the product isn't available there it falls over. It looks like the "Amazon detector" is getting a little bit overzealous :)

