Altmetrics is a new concept in bibliometrics that aims to include alternative metrics when assessing the impact of an academic output.
These alternative metrics might include:
This can be found on BURO, look for the Altmetrics icon at the bottom of the BURO record:
This new service is available through IRUS, which provides statistics to repository usage.
Found on Scopus. Look for the Plum-X icon on the right-hand side of an article record: