Why are more countries listed than included in segment?
I created a segment that was composed of the 28 EU member countries. When I look at a 'Countries' report and apply that segment, there are a handful of other countries in addition to those 28. I think the total was 43. I've also noticed this with similar segments that are just two or three countries. I'll look at traffic to the home page, then apply that segment (say Australia and New Zealand), and I'll see the US and Canada creep in. Any ideas why that would happen? Segment seems pretty straightforward.