Altmetric gathers data about online attention to scholarly articles and displays the data in search results. References to an article from Twitter, Facebook, blogs, news media, policy documents and more, are identified by Altmetric "donuts" and pop-ups.
If an item you are looking at has Altmetrics, you will find it within the full record at the bottom of the page.
Click the Altmetric donut or pop-up to see details about the references, including links to the most recent ones.
For more details about Altmetric's weighting system, please see their Attention Score webpage.
Altmetrics is a recent term for alternative metrics, distinct from more traditional metrics for the impact of scholarly articles and journals (such as citation counts, H-indexes and Eigenfactors). Find out more in the altmetrics entry in Wikipedia and at altmetrics: a manifesto.
For each type of referring source (news, blogs, etc.) you will see the most-recent four references, with links to their original contexts. Earlier references are counted in the data, but not shown.
To see Altmetric data outside of DiscoverUR, a free Altmetric bookmarklet is available as a plug-in for Chrome, Firefox and Safari browsers. When viewing information about a scholarly article in PubMed, ArXiv, or on a webpage containing the article's DOI, click the bookmarklet to see if any Altmetric data is available.
If you have a problem using the bookmarklet that is not addressed on the installation page, Alltmetric also maintains a Bookmarklet FAQ.