(7 May 2013) PLOS, which has article level metrics (ALM) on every article has announced the first iteration of Relative Metrics (Beta) to provide much needed context to its existing suite of ALMs. These new ALM features are the first deliverables in a year-long program of Relative Metrics innovations. Your feedback is welcome.
Read the complete announcement here: http://blogs.plos.org/plos/2013/05/providing-context-to-article-level-metrics/