Languages of the World (Wide Web) - Google shows the various connections between languages as shown by web site linking. Beyond many expectable regional cultural groupings, there are several fun things to notice:

• The inventor of Esperanto was Polish
• The Armenian diaspora is particularly strong in eastern Europe
• Hungary overcomes its linguistic isolation to stay extrovertedly linky
• There are a lot of Kurds in Sweden (?!)
• Urdu is the one language of India that is far more connected to other languages than to others in India
• Swahili looks like it’s just another language in India (except it also is the only language connected to Tagalog)
• The French have a thing for Dutch girls

Some other interesting but less strong connections show up when they show the pre-normalized graph.