The aim of the present article is to discuss several consequences of the Open Science from a perspective of science communication and philosophy of communication. Apart from the purely communicative and philosophical issues, the paper deals with the questions that concern the science popularization process through social media. The article consists of three sections: the first one suggests a definition of science communication and social media, the second examines the transformation of science in the Age of the Internet and considers the influence of social media on science communication, the third and final one presents some case studies and philosophical observations. The most important conclusion to be reached here is that the social media have changed science and science communication. Twitter and blogs as novelty tools of science communication can be useful and meaningful for both science and society. Furthermore, social media can be used to facilitate broader involvement of citizens in the discussion about science.