Following up on my last post on this subject, it appears there has been a recent spate of posts and articles about sharing in science. Taken together, they're a great summary of the challenges Open Science is facing, but also of the benefits and the steps some groups are taking to enhance openness.
Both Neil Saunders and Cameron Neylon point out this article in the NY Times, and a post on the 23andme blog.
In response to the 23andme post, Jasper A. Bovenberg refers to his paper in Genomics, Society, and Policy from 2005.
There is also an article from BusinessWeek in 2007 about some big pharma companies embracing Science 2.0, and an article in Scientific American from a few weeks ago debating the pros and cons.