Impact of blogs

At least in economics have been quantified (via MR):

There is a proliferation of economic blogs, with increasing numbers of economists attracting large numbers of readers, yet little is known about the impact of this new medium. Using a variety of experimental and non-experimental techniques, this study quantifies some of their effects. First, links from blogs cause a striking increase in the number of abstract views and downloads of economic papers. Second, blogging raises the profile of the blogger (and his or her institution)and boosts their reputation above economists with similar publication records. Finally, a blog can transform attitudes about some of the topics it covers.

Take a look!

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