Where does our data come from?
Our data comes from the following sources:
1. User additions. Anyone can add a new URL for testing and it will be continuously tested by our system.
2. Collaboration with other projects. Any URL that's marked as blocked in China by these sources is automatically imported into our system: Autoproxy, China Digital Times and Herdict. Each keyword in our system - be it on on Baidu, Google, Weibo or Wikipedia - corresponds to a URL on that website which is tested for censorship similarly to how any other URL is tested. These keywords are mainly added by users. China Digital Times have an extensive list of blocked or sensitive keywords and all of them have been integrated into our system.
You can read more about the mentioned organizations at https://en.greatfire.org/friends.