SINA is an online media company for China and Chinese communities around the world. SINA operates four major business lines: Sina Weibo, SINA Mobile, SINA Online, and SINA.net. SINA has over 100 million registered users worldwide. SINA was recognized by Southern Weekend as the "Chinese Language Media of the Year" for 2003. Sina owns Sina Weibo, a Twitter-like microblog social network, which has 56.5 percent of the Chinese micro-blogging market based on active users and 86.6 percent based on browsing time over Chinese competitors such as Tencent and Baidu. While relatively unknown in the... U.S., the Chinese social networking service has more than 140 million users and millions of posts per day, and is adding 20 million new users per month, says the company. Sina has said it has more than 60,000 verified accounts, consisting of celebrities, sports stars and other VIPs. The top 100 users now have over 180 million followers combined. Sina.com is the largest Chinese-language infotainment web portal. It is run by SINA Corporation which was founded in 1999.
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| NASDAQ symbol: | SINA |
| Founded: | November 30, 1998 |
| Headquarters: | Sunnyvale, California |
| Legal structure: | Public company |
| Annual revenue: | $369,590,000 |
| Net income: | $80,640,000 |
| Operating income: | $74,580,000 |
| Market cap: | $2,400,000,000 |
| Industries: | Prepackaged Software |