PassportStamp.com lets users create personalized maps of countries they’ve been to (requires free registration, TravBuddy doesn’t). The result is a world map that shows the collective popularity of each nation based on about 2,300 travelers. PassportStamp’s blog also has a few useful travel tools.
Europe, North America, and Australia seem to be the hot spots while Africa and the Middle East are a bit negleced but hopefully won’t be in 10 years if our predictions hold true.