Abstract. In recent years, the influences of the main web 2.0 tools on the scholarly communication cycle have been at heart of significant surveys. Awareness and/or adoption rates of these tools were a relevant aspect of this subject.In a very similar perspective, the present study addresses the Italian astrophysical research community. An online questionnaire was created in late September 2014 for the researchers working at the Italian National Institute for Astrophysics. 117 astrophysicists have revealed their attitudes and behaviour towards some major professional social networks (ResearchGate, LinkedIn, Academia) as well as their opinions about aspects of the main validation practices. The results show that professional social networks have been adopted widely (∼66%). ResearchGate results to be the most popular tool, followed by LinkedIn. The respondents' opinions about different types of peer-review show this community is only partly satisfied with single-blind peer-review; nevertheless, the set of scholarly values and communication practices remains rather traditional and social networks result to be used chiefly for enhancing research output dissemination and researchers' availability on the web.