Abstract: The subject of this article is the blogosphere of the Russian Federation and the United States through the means of its implementation in the indicated countries. The author examines the peculiarities of using blogosphere as the information, political, social, educational, corporate, and entertaining means of communication. Special attention is given to the differences between the points of view of the Russian and American scholars upon the problem of application of blogs in solution of the diverse social tasks. The following conclusions were made in the course of this work: there is noted higher popularity of blogs, but lesser trust in them as the means of acquiring new information in the United States rather than Russia; more open dialogue between the political opponent groups in the Russian blogosphere; less noticeable role of separate bloggers in creation and coordination of public movements in the United States. The results of this work can be valuable in forecasting the development of new types of media in the aforementioned countries. The scientific novelty consists in the synthesis of information of the multiple field-specific research for determination and comparison of the common regularities of functionality of blogospheres in the Russian Federation and the United States.