Blogging is politically important in large part because it affects mainstream media, and helps set the terms of political debate (in political science jargon, it creates ‘focal points’ and ‘frames’). Note that we don’t provide an exhaustive account of blogs and politics – some aspects of blogging (fundraising for parties, effects on political values in the general public), we don’t have more than anecdotal data on.
I would phrase my view as follows. Blogging creates “common knowledge,” even if only among a few at first. Will an idea fly or not? You find out quickly by sending it out into the blogosphere and seeing the reaction. The verdict will be swift and often ruthless, but more often than not fair. And once this common knowledge leaks out to broader and more general communities, the effect is powerful. People will abandon an indefensible idea before it gets started. Or they will jump on the bandwagon right away. They already know how the fight will turn out. In short, the blogosphere is like simulating the larger debate with very swift intellectual mini-armies.
Under this account what matters about the blogosphere is the quick back and forth and the ability to construct rapid-fire dialogues through links. It also means that a better than average debator can influence the broader world by swaying the earlier mini-debate through sheer force of intellect. Of course as the blogosphere gets larger this will become harder to do. The argument will be “thicker,” and arguably less conclusive as well. After all, what if everyone wrote a blog? The debate would not be simulated any more.
What else does it mean for ideas to be evaluated more quickly? Many new ideas will have better chances than before. Throw it out there and see if it sticks; the blogosphere is relatively egalitarian with regard to traditional credentials. Debate-defensible ideas will do better, on average. I hold a number of views that I believe are true, but find difficult to defend in debate on blogs. Either the supporting data are not on the web or the ideas may sound politically incorrect. Ideas that take time to mature, and reveal their full wisdom, may suffer as well.
Print out and read the whole paper; at the very least it is likely to become a mini-classic, maybe more.