Josh Gans writes up how Paul Krugman is not right when he suggests that online publishing is somehow a substitute for academic journals in

Blogs and academic research: A timely story in Digitopoly:

So it took some time, and if you have read to the end of this lengthy post, even longer, but an initial blog post did lead to a deeper understanding of at least this phenomenon. What this demonstrates, however, is that blogging and the usual academic functions are not substitutes but complements.

(Via www.digitopoly.org)

Take a longer look at what he describes, as those of you interested in carbon offsets and trading will find it interesting.