Picture: 11-01, Ortho-Mousny, Ardens, Belgium, 20 km from La Roche
The best known manifestation of Pareto/Zipf distributions is the 80/20 Rule, which is often used to explain that 20 % of products count for 80 percent of revenues, or 20 percent of our time accounts for 80 percent of our productivity, or any number of other comparisons that all share this characterisitic of a minority having disproportionate impact.
(Chris Anderson, The Long Tail)