Altmetric.com's Altmetric Bookmarklet is a free browser plug-in that allows you to pull up altmetric data on articles as you access them in your browser.
Articles must have a DOI and Google Scholar friendly citation metadata for the Bookmarklet to retrieve their altmetric data.
You can use the Altmetric bookmarklet to:
To see the bookmarklet in action and for more information on how to install this tool, see the following video (00:45s) from Altmetric.com:
Here's how to determine if altmetric data is available for a Scopus article:
Many journal publishers now provide altmetric data at the article-level. For example, the journal publishers Elsevier, Nature, Springer, Taylor & Francis, and Wiley now capture this data if it is available.
The screenshot below shows the altmetrics that are available for an article published by Nature Publishing. Under the "Online attention" heading data from Altmetric.com is shown, including the Altmetric.com score, what percentile this score places the article in, and the number of mentions the article has received on various social media platforms, blogs, and news outlets. A written explanation describing how the article's score was determined is also listed.