Keith Kloor has posted part 2 of the conversation we had with the three of us (i.e. him, Lucia and me). The topic of discussion here is the role of blogs in fostering reasoned discussion (or rather staunch debate, see e.g. Bob Grumbine’s discussion of the difference). This one is much shorter than part 1.
Basically, I think blogs are conducive to a more polarized debate, partly because the anonymity of the internet.
A related point (not discussed with Lucia and Keith) is how the blogosphere differs from the science-sphere. Grumbine had some very good insights into that, retold here. On the internet, anyone can say anything; there’s no quality control, no gatekeeping. Depending on your viewpoint, that may be a good or a bad thing, compared to science. I tend to think though that your best bet to learn science is from scientists.