Altmetrics are a new form of metrics, proposed as an alternative to Journal Impact Factor and other personal citation indices.
They often focus on social networks, online reference managers and bookmarking for analysis, as opposed to peer citation.
See how Altmetrics are used by an institutional repository
Below are two examples from two articles.
Thatcher, Mark (2013) European Commission merger control: combining competition and the creation of larger European firms.European journal of political research
– LSE Research Online
Kervin, Karina E.; Michener, William K.; and Cook, Robert B.. (2013).
“Common Errors in Ecological Data Sharing.” Journal of eScience Librarianship 2(2): Article 1.
– University of Massachusetts Medical School
Note the presence of the icon below the social network links.
Click this icon to see a breakdown of the article metrics; the platform the article was shared from, what was written or tweeted about the article, where it was shared, and its overall score.
For more information on Altmetrics, visit their site.