Twitter usage is growing rapidly around the world, with most regions experiencing triple-digit growth between June 2009 and June 2010. According to a latest comScore report "nearly 93 million Internet users visited Twitter.com, an increase of 109% from the previous year. The growth was strongest in Latin America -305%, Asia Pacific -243%, Middle-East Africa -142%, while Europe soared -106%. North America's growth was 22% in June.
Indonesia reported highest penetration, with 20.8% followed by Brazil and Venezuela. The U.S. is tops in Twitter.com access from smartphones, with an 8.3% reach among those users.
"comScore's numbers don't include Twitter usage via apps like Tweetdeck or Twhirl, and it doesn't count Twitter.com visits from mobile sources or public computers (such as Internet cafes)."