Juan Carlos Lopez, Editor of Nature Medicine, came under some attack for his talk and Spoonful of Medicine blog post identifying open access publishing as one of several publishing models. He’s therefore writing some additional posts on the topic at Spoonful of Medicine, which on the basis of the first, will be well worth reading:

the peer-review process is free, but only in a most superficial way. Reviewers get compensation from evaluating manuscripts for high-profile journals, provided that an initial screening of manuscripts takes place and truly identifies the contributions that will be of interest to the reviewers. The golden rule that there is no such thing as a free lunch also applies to our trade.