A recent study by SemanticHacker shows the overwhelming majority of tweets are in English. The majority of Twitter users are still from the US but other countries are catching up fast. As US growth is decreasing dramatically Twitter needs to internationalize fast to continue their growth story.

How to do so? First, individual language versions are a prerequisite for success. Only after Facebook localized their website with a specific language version did it take off in Germany, making it the largest social network in Germany with about 11 million unique visitors at the end of last year. With the roll-out of five language versions, the latest being German, Twitter is hoping to catch onto the international markets.