Twitter is now available in Korean, which means users can now send out 140-character messages in seven different languages.

The social-networking site announced the news on Tuesday in a blog post written in Korean. It said the number of twitter users in South Korea increased tenfold in 2010.

That growth isn't much of a surprise. Twitter said in December that it has triple the number of employees that it did just a year ago. With a staff of about 350, the company searching for a new office, potentially outside of its native San Francisco.

Launched in July 2006, Twitter now has more than 175 million registered users, with 2.2 million of those in South Korea, the AFP said.

"The Korean-language tweets have grown even faster than tweets in general," Twitter co-founder Evan Williams said in the AFP report. "We've seen over 3,400 percent growth…of Korean-language tweets from January 2010 through December."

The site is also available in French, German, Italian, Japanese, Spanish, and English. Twitter said that 70 percent of users are outside of the U.S.

Most of Twitter's growth was achieved over the past two years. According to a recent study from social media analytics company Sysomos, 95 percent of Twitter handles have been created since January 2009.

Prior to that time, Twitter's growth had been relatively steady, albeit slow.

Twitter is available in Korean on both its Android and iPhone apps, the mobile site, and on Twitter.com. To access the feature, existing users must log in and change their language settings.

Twitter said that it will add more languages this year.