Charles Cao [Photo / sina.com]

Sina Corp's CEO Charles Cao has been selected by Time Magazine as one of the world's most influential figures of the year.

Cao launched a micro blog service called Weibo while dealing with an adverse situation and has built it into one of the most open online platforms in China, the magazine said.

According to Sina's financial results released on March 1, the total number of registered users on Weibo has surpassed 100 million.

The company's unaudited net revenues grew 12 percent year-on-year to $402.6 million in 2010, according to a financial report.

The 2011 TIME 100 selected other tech gurus including Facebook CEO Mark Zuckberg and Google CEO Larry Page.