Measuring Web Site Usability Against Power Curves

2007 November 3

An idea to use a plot of page view count on the y axis versus “ranked” page view count on the x axis as a metric for usability or customer/visitor satisfaction. The thesis is that a web site which follows Zipf’s law and whose graph is a power curve (with a “long tail”) has good customer satisfaction and is designed well with good usability, whereas sites that are poorly designed or aren’t very usable will have a plot that drops off much more quickly.

The page also has an example of a stacked line graph (same axes) with page views broken down into non-RSS and RSS views.

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