Top 5 SEO test ideas for retail sites

When SearchPilot began talking about building an SEO split testing software, back when we were part of Distilled, I naively thought that we’d get to the point where we had a bunch of tests we knew worked every time.
In reality, even brands with multiple domains see different results on domains with the same templates in the same industry. Just because it works on the .co.uk doesn’t mean it works on the .com.