Study on the public opinion's being out of control on the internet and analysis of public opinion communication's impact

Public opinion on the internet provides a chance of equal communications between the individual and the public.However,the homeo-collection of web information,web links and the same public opinions in virtual society will make information be collaborative filtering.What the netizens see and hear could only be their own echoes and images and this kind of narrow circumstance would possibly lead to group polarization.Therefore,the public opinion on the internet must be effectively monitored and guided.