Social networks and other social media have yet to make the impact on scholarly communication that they have done on the wider consumer web. The main barriers to greater use have been the lack of clearly compelling benefits to outweigh the real costs (e.g. in time) of adoption. Quality and trust issues are also relevant: researchers remain cautious about using means of scholarly communication not subject to peer review and lacking recognised means of attribution. Despite these challenges, social media do seem likely to become more important given the rapid growth in membership of the newer scientific social networks (Academia, Mendeley, ResearchGate), trends in general population, and the integration of social features into publishing platforms and other software (page 72; 134).