There is a war going on in the blogosphere. Have a look at one of the current debates between two heavy weight bloggers, Joe Romm versus Roger Pielke jr:
This summary is far from objective, of course; Roger Pielke jr. is a senior fellow of the Breakthrough Institute. However, the link gives a great insight into the debate and its political context. It is a debate between 'warmists'; both believe in anthropogenic warming. The political subtleties of this case suggest that scientific debates (and the topics discussed) are closely embedded in the political context in which they are staged. The history of anthropogenic climate change is always a political one.
Even more interesting, this debate between Romm and Pielke jr offers a (somehow frightening) insight into the newly emerging culture of the blogosphere.
Blogs are the winners of the current crisis in climate science. They are praised for many reasons such as opening up the debate for other voices, making climate knowledge transparent, and building up new trust between science and public. On the other hand, the blogosphere also brings forth new forms of scientific culture. One of the characteristics of the climate blogosphere is the dominance of a few influential blogs. These blogs are indeed making opinion, and they do so in relation to each other. In this virtual world between anonymous posting, science communication and political influence, a strange subculture has emerged. Scientists turn into heavy weight champions; scientific debates are staged as cockfights with prize money; scientists organize and direct their fan base and turn it into a mob, and the applause of the audience is the new peer-review. If this is the future of post-normal science, you'd better run!