*Apologies for cross-posting*

Nature Web Focus on "Access to the Literature"
http://www.nature.com/nature/focus/accessdebate/

The Green and the Gold Roads to Open Access
http://www.nature.com/nature/focus/accessdebate/21.html
(Harnad, Bordy, Vallieres, Carr, Hitchcock, Gingras, Oppenheim
Stamerjohanns & Hilf)