Next up: MuniGroup.com, jointly owned by Goldman, PaineWebber and Spear Leeds Kellogg.

FORBES: Fear, Greed And Technology

Suppose Robinson Crusoe is tired of trying to scoop up fish with his hands and figures out how to turn a tree branch into a spear, increasing his daily catch tenfold.

FORBES: When It Comes to Wealth Creation, There Is No Pie