Social networks have become a new progressive step in the development of not only communications between people, but also in the areas of marketing, advertising, trade, economics, and public administration. Most importantly, they are increasingly influencing the solution of acute social problems of mankind. The book details influence tools that can be used in networks; consider the advantages and disadvantages of specific types of networks, how to use them in marketing and PR of your organization. We will write about the successful promotion of blogs, their promotion and optimization, reveal the secrets of monetization of blogs, share the most useful services for Twitter, LiveJournal, etc.