The citation network has long been held as a metric for measuring the impact of scholarly literature, but with readers today far likelier to tweet than cite, new practices have developed to track clout on the web. These methods, called altmetrics, measure the network of references from Twitter and blogs to Mendeley and Zotero. These methods are still developing. Total-Impact, one technology that has developed around the ideas of altmetrics, warns that it shouldn’t be used “as indication of comprehensive impact...take it all with a grain of salt.”
Because Total-Impact means to track not only traditional scholarly articles, but also other types of files, code, and ideas, structuring the criteria has been difficult.