Even if Twitter is banned in mainland China, there's no reason why Chinese businesses can't use Twitter to market themselves Internationally.
Twitter is launching a Hong Kong office as the US social media giant attempts to court Chinese firms - even though its website has been blocked on the mainland since 2009.
The company's first office in China will be tasked with finding mainland businesses seeking to attract and communicate with overseas customers.
"This is the first market we've gone into where we're targeting outside of the country," Peter Greenberger, Twitter's sales director for emerging markets, told the Post.Twitter To Open Hong Kong Branch To Expand China Sales [scmp.com]