A company I used to work for outsourced a large chunk of the work force to Poland. Poland was chosen because they were technically sound, generally, spoke above-average intelligible English and, most importantly, valued the American dollar about 6 times more than we do.

This meant, generally, that they could hire 6 Polish workers for every American worker we laid off (if you ignore the fact that many of the American workers were longer in the tooth, and hence higher on the salary scale, which made it even more profitable a deal.)

The main worry about moving somewhere with an economy that isn't horribly weak is that as our American dollars infuse their economy, and more Polish outsourcing companies are stood up to attract more American dollars, we inflate their economy. The cost of living goes up, the value of our dollar becomes less strong, and the benefits to having moved work there becomes less appealing. This could well lead to a tipping point when American companies pull out, which I worry could 'burst the bubble' and leave Krakow Poland in worse shape than if we'd never been there.