Though the US accounts for 50.1% of all Twitter users––down from 62.1% in June 2009––Twitter use elsewhere, particularly Brazil, Germany, and Indonesia, is quickly growing, according to a study by Sysomos.

Brazil accounts for 8.8% of Twitter users, up from 2% in June 2009. Germany's Twitter users account for 2.5%, up from 1.5%, and Indonesia––which accounted for only 0.5% of users just six months ago––climbed to 2.5%.

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Americans Most Active Tweeters

Americans still lead other countries in terms of tweet activity: 56.6% of all tweets come from the US, down from 50.9 in June, followed by the UK (8.1%) and Brazil (6.7%).