1. There are more swedes in scandinavia than there are any other nationality.
2. Young people move to the cities to find work.
3. Youth unemployment rates are high across scandinavia.
4. Ease of mobility across the scandinavian cultures. Olso in particular is close to sweden, and swedes understand norwegian with very little effort (and vice versa).
Thus, you have young swedes moving into all of the larger cities in scandinavia, including Stockholm, Malmö and Gothenburg.
No, there's a clear difference between Sweden/Finland and Norway/Denmark.
http://www.google.com/publicdata/explore?ds=z8o7pt6rd5uqa6_&...
Debatable ;) But yes transitioning from Swedish to Norwegian and Danish is much easier than say, French to Italian.
My reply to another thread a while ago: