On Beijing based XD-Tech company’s website, its case study page includes the following descriptions, translated by CDT:
Public Opinion Monitoring and Control System of Public Security Department of Guangdong Province
This system is used for monitoring and controlling public opinion (mainly on news sites and forums) in websites in Guangdong province. It detects sensitive terms and will subsequently inform the relevant personnel.
The customer installed three servers for this project, grabbing and monitoring over one million pages per day, supporting multiple users. Each user can set up different monitoring phrases and keywords; the results will be shown in a spreadsheet or emails to relevant personnel. The system will keep data history for two months. The designed capacity is thirty million, can be used by more than one hundred users, and can search and produce statistics according to IP addresses.
Currently the system is running stably, generating public opinion briefs everyday for relevant departments and personnel to read.