This should be a business decision (Score 3, Insightful)

All this talk about which language to use seems to me to miss the point. If 40+% of a business's customer base speaks a certain language, it makes sense to me to not alienate that market segment and instead appeal to them. Imagine if McDonald's said "we are an American company and insist that everyone who comes to our restaurants speak English no matter where they are." The Internet is obviously a global market place. A company that makes their product difficult to use for their customers is missing an opportunity which another business will eventually take advantage of. Maybe even a foreign business...