I blogged on Tin Can before, and now there is an interesting experiment you can join. Varadarajan (Varadu) Sridharan recently joined a cohort conducted by Advanced Distributed Learning ( http://adlnet.gov/ ) where everyone learns about Experience API (xAPI or Tin Can). Experience API is an e-learning software specification that allows learning content and learning systems to speak to each other in a manner that records and tracks all types of learning experiences. FYI, ADL group is also the team behind the widely-popular SCORM framework, and Tin Can is really an visionary, cross-platform standard that will boost learner analytics (and big data in general I think). http://xapijv.kneaver.com/ and the team itself already looks inspiring!