PLoS Biology has an editorial about the embargo – Science in the News:
Perhaps science news, then, should not be considered a special case of the news. After all, unpublished, un-peer-reviewed science is covered in the news when it is presented at big scientific congresses. And the number of Web sites presenting un-peer-reviewed science abound. Lab blogs may not yet have made a widespread appearance; however, nothing but ingrained traditions of ascribing priority prevent scientists from sharing their data as they acquire it—as they already do, for instance, when sequencing genomes. Perhaps professional journalists covering science should be encouraged to do so when they become aware of a story, carrying the responsibility for conveying to the public the context and stage of the research project.