"BusinessWeek recently created a bit of a stir from bloggers such as Ogilvy’s John Bell when it reported that Google had created a method for ranking the influence of social networkers. But it might be moot, because bloggers are more influential."
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Google’s PageRank Is Best Way to Rate Online Influence - Advertising Age - Steve Rubel
Rafer sez:
There’s a lot of profit still available from aggregating the influence of “shoulder” publishers, both horizontally and vertical by vertical. However, never, ever crawl. Tracking script installs are the only way to deploy resources efficiently.