Heather Morrison,Imaginary Journal of Poetic Economics, 2012 October 6
- Includes charts and metrics related to growth in Open Access publishing

"Open Access (OA) is a means of disseminating scholarly and scientific literature over the internet free of charge to researchers and to anyone else who might benefit from accessing the results of publicly funded research "

PLoS, SPARC and OASPA have collaborated to create a guide that identifies the core components of OA and how they are implemented across the spectrum between “Open Access” and “Closed Access”.

"...an international alliance of academic and research libraries working to correct imbalances in the scholarly publishing system."

Forum for Open Access journal publishers. Includes links to resources and studies.

Started in 1991 as "an openly accessible, moderated repository for scholarly articles in specific scientific disciplines."

"Since its founding in 2000, PLOS rapidly evolved into a driving force in the open access (OA) movement, which seeks to make the results of all scholarly research accessible to everyone."

"in summary...
Gold | open access publishing
Green | can archive pre-print and post-print
Blue | can archive post-print (ie final draft post-refereeing)
Yellow | can archive pre-print (ie pre-refereeing)
White | archiving not formally supported..."

Anatomy of open access publishing: a study of longitudinal development and internal structure. Mikael Laakso and Bo-Christer Björk. BMC Medicine 2012, 10:124 doi:10.1186/1741-7015-10-124