Sina said that more than 5,000 companies and 2,700 media organizations in China use Sina Weibo. According to Mashable: Just as American celebrities communicate with their fans via Twitter, Chinese celebrities depend on Weibo as a way to connect with their fans and drive popularity.
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As of January 2012, is the 4th most visited website in the whole of Europe, behind only Facebook, Google and Group.
It is very popular to young people, but it is not a dating site, as you can find people with any king of interest.
However, there are some social media networks that let you do different things.