We just visited Canada this year and it was really wonderful. I can see why people would like it. Though, of course, we were there in the summer. Not sure how we would have felt after weathering a winter. ;-)

An interesting thought brought up by this report you mentioned is the difference between a country that is pleasant to live in and one that is easy to move to. I can imagine some countries could be great for natives but hard on immigrants...and possibly visa versa.

It would also be interesting to see the countries ranked within language groups. I bet Spain would have come out higher if the people being pooled were the very large group of Spanish speakers living elsewhere than their original homes.