Features

The Long Tail Debate: A Response to Chris Anderson, by Anita Elberse

.. the data reveal two other important patterns. First, the tail is long but extremely flat--and, as online retailers expand their assortments, increasingly so. Second, compared with heavy users, light users have a disproportionately strong preference for the more popular offerings, while both groups appreciate hit products more than they like those in the tail.

Data mining: the theory of everything?, Swivel blog (commenting on Chris Anderson latest theory).

Google Toolbar data and the actual surfer model, by Greg Linden.

Why Analytical Applications Fail, by Zach Gemignani.

Google, Yahoo!, MSN, and Multichannel Forensics, by Kevin Hillstrom.