Thanks, Richard.

Academia.edu has started a similar service, "Academia Letters."  Some of our colleagues have already used it.  Short pieces, rapidly reviewed, published with a DOI.  I quite like the idea. 

But there are many, many experiments out there in academic publishing because everyone who thinks about it seriously knows the traditional models of peer-review and of knowledge-distribution-funding are terminally flawed  (peer review is not free from bias, distribution is expensive and exclusionary, publication is too slow).  PeerJ, PLOS, etc. etc.