Citizen Product Design
Concept used by the New York Times at http://www.nytimes.com/2007/03/25/business/yourmoney/25Proto.html?
"Citizen product design is still unsung, but it has already become a force in software, especially gaming software. “Counter-Strike,” a player-created “mod” (for modification to the original game) of “Half-Life,” became as popular as the original game. Apache, the popular open-source Web server software, or the Firefox Internet browser, with its thousands of add-ons and plug-ins, also depend on users to develop innovations.
Burton Snowboards, for instance, grew out of modifications that Jake Burton Carpenter made to a product called the Snurfer. He added a binding for the feet so that Snurfer riders no longer had to guide it by a rope on its nose.
SawStop makes a table saw that automatically stops within five milliseconds when it comes into contact with a user’s finger or thumb. The blade leaves the user with a small nick or cut, but the digit remains intact. It was invented by Stephen Gass, a patent lawyer who liked woodworking and thought that making a table saw safer was an interesting challenge." (http://www.nytimes.com/2007/03/25/business/yourmoney/25Proto.html?)