A public policy on the gathering of publicly available online information does not exist. Such a policy should be made available in order create an accessible and foreseeable legal basis for the application of this investigative method.
In September of this year a new internet law was enacted in China by the Communist Party. Bloggers and Twitterers must be careful what they post. If they have more than 5000 views or 500 shares, they risk being accused of gossip and slander.