Five of the six papers published in support of yesterday's Mars water announcement required a paid subscription to Science to read. Citing Title 17 of the U.S. Code, which states federal works are not subject to copyright protection, Berkeley biologist Michael Eisen decided to make them freely available on his blog. Viva la revolución.
I've read several articles suggesting that in the long run pay subscription journals stifle scientific progress over all. Individuals who are unable to afford and gain access to the periodicals tend to be "behind the times" . Relevant research that could assist in their own endeavors is not accessible. In a way it probably creates a class system within the scientific community that really shouldn't be there.