Author-level metrics in the new academic profile platforms: The online behaviour of the Bibliometrics community Martín Martín, Alberto Orduña-Malea, Enrique Delgado López-Cózar, Emilio Online academic profiles Author-level metrics Social media metrics Google scholar citations Altmetrics Citation impact The new web-based academic communication platforms do not only enable researchers to better advertise their academic outputs, making them more visible than ever before, but they also provide a wide supply of metrics to help authors better understand the impact their work is making. This study has three objectives: a) to analyse the uptake of some of the most popular platforms (Google Scholar Citations, ResearcherID, ResearchGate, Mendeley and Twitter) by a specific scientific community (bibliometrics, scientometrics, informetrics, webometrics, and altmetrics); b) to compare the metrics available from each platform; and c) to determine the meaning of all these new metrics. To do this, the data available in these platforms about a sample of 811 authors (researchers in bibliometrics for whom a public profile Google Scholar Citations was found) were extracted. A total of 31 metrics were analysed. The results show that a high number of the analysed researchers only had a profile in Google Scholar Citations (159), or only in Google Scholar Citations and ResearchGate (142). Lastly, we find two kinds of metrics of online impact. First, metrics related to connectivity (followers), and second, all metrics associated to academic impact. This second group can further be divided into usage metrics (reads, views), and citation metrics. The results suggest that Google Scholar Citations is the source that provides more comprehensive citation-related data, whereas Twitter stands out in connectivity-related metrics. 2018-04-17T12:11:38Z 2018-04-17T12:11:38Z 2018-04-16 journal article Martín-Martín, A., Orduna-Malea, E., & López-Cózar, E. D. (2018). Author-level metrics in the new academic profile platforms: The online behaviour of the Bibliometrics community. Journal of Informetrics, 12(2), 494-509. [http://hdl.handle.net/10481/50285] http://hdl.handle.net/10481/50285 10.1016/j.joi.2018.04.001 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access Atribución-NoComercial-SinDerivadas 3.0 España Elsevier