Structural changes to the scholarly environment are taking place as a result of the introduction of Web 2.0 technologies, which have given rise to Open Science 2.0 initiatives, such as open access publishing, open data, citizen science, and open peer evaluation systems. In turn, this is leading to new ways of building, showcasing, and measuring scholarly reputation through emerging platforms, such as ResearchGate. The article reports the findings of a survey of the opinions and practices of 251 European scholars about this emerging scholarly market. Findings showed that traditional research-related activities, including conducting and collaborating in research, taking part in multidisciplinary projects, and publishing in journals contribute most to scholarly reputation. The greatest weaknesses of reputational platforms were a lack of trustworthiness and being open to gaming. The large majority of researchers, despite some reservations, thought that reputational systems were here to stay and will become increasingly important in the future, and especially for younger researchers.