The results of current authors’ research on the role of Internet discussions in processes of political e-participation are represented in the article. The investigators discover and evaluate fundamental parameters of socio-political discussions’ quality from their deliberative point of view on basis of profound content analysis of 11 online discussions on Russian pension reform. The study of such parameters allows to formulate essence of discourse participants’ opinions towards various social issues (for example, support or denial of pension reform). As a result, data sets combining original author’s text of posts and generalized opinion are formed. Henceforth, it lets predict a type of opinion in dependence of text content, find out plurality and ambiguity of opinions on up-to-date theme. Such parameters as argumentation and civility are extensively analyzed in the article. The research methodology, based on conception of J. Habermas, that can be used in further similar investigations is revealed in detail.