Very similar to this categorization: http://blog.rongarret.info/2009/10/catalog-of-wealth-creation-mechanisms.html http://blog.rongarret.info/2009/10/catalog-of

Very similar to this categorization: http://blog.rongarret.info/2009/10/catalog-of-wealth-creation-mechanisms.html http://blog.rongarret.info/2009/10/catalog-of-wealth-creatio...