It seems the mind is almost incapable of "getting" power laws. In the context of the fat tails of financial markets, Nassim Taleb makes this point. In the context of weblogs Clay Shirky does. And in the context of ecommerce it's made (in a roundabout way) in a a feature in the current issue of Wired.

[UPDATE: Good commentary (but in danish) by Henrik Føhns.]