To our opinion, almetrics as alternative metrics is like an antithesis to classical metrics.
The most important question are sources. For now, the sources are rather undefined
and incomplete. However, following further development of almetrics it is obvious that
the almetrics services are aware of it. Therefore, they have been establishing
cooperation with commercial databases such as Web of Science, Elsevier, Scopus and
many others. Every day through social media we follow development of almetrics,
reading news like „Plum Analytics Joins Elsevier“.The increasing popularity of altmetrics
shows the fact that more publishers put on their website very impressive „donut“ like
BiomedCentral, Nature Publishing Group etc.