He wrote: For want of a nail, the shoe is lost For want of a shoe, the horse is lost For want of a horse, the rider is lost.

VOA: special.2009.11.01

For want of a nail the shoe was lost.

FORBES: Social Media is All About the Details

These are the nail salons, dry cleaners, and shoe repair shops that make up a very large but completely fragmented market.

FORBES: Radius: How Facebook's Youngest Hire Is Tackling The Local Data Problem