I wouldn't touch a skull with a 10 foot pole. A skulls were once part of heads, and heads belong on people/creatures, not on the ground or near pirate treasure. Prove that I'm not as manly as you by clicking through all of these scary skulls.
Implications - Consumers in modern society are constantly seeking out products that will provide an element of unconventionality to their lives. Companies trying to increase their appeal could develop more of their items with an aspect of shock in mind.