Here's a geo map overlay view taken from Google Analytics for my blog's last 500 visits.
As you can see, Erlang isn't just popular in Sweden :)
Ranked by number of visitors, the top 10 countries are USA (1312 visits), UK (188 visits), Germany (151 visits), Canada (135 visits), China (120 visits), Sweden (106 visits), france (94 visits), Australia (81 visits), Brazil (75 visits) and Netherlands (63 visits).
Where are you from?
Update: I made the high-res map downloadable.