Source: Think Links
Current ways of measuring scientific impact are rather course grained, they often don’t capture the many different ways that science and scientists might have impact. As science increasingly is done on-line and in the open, new metrics are being created to help measure this impact. Jason Priem, Dario Taraborelli, myself, and Cameron Neylon have recently put out a manifesto calling out-lining a research direction for these new metrics, termed alt-metrics.
You can read the manifesto here: http://www.altmetrics.org/manifesto/