Marxian economics (see labor theory of value) distinguishes in the Grundrisse between material wealth and human wealth, defining human wealth as "wealth in human relations"; land and labour were the source of all material wealth. The German cultural historian Silvio Vietta links wealth/poverty to rationality. Having a leading position in the development of rational sciences, in new technologies and in economic production leads to wealth, while the opposite can be correlated with poverty.[11][12]
Affiliate marketing has grown quickly since its inception. The e-commerce website, viewed as a marketing toy in the early days of the Internet, became an integrated part of the overall business plan and in some cases grew to a bigger business than the existing offline business. According to one report, the total sales amount generated through affiliate networks in 2006 was £2.16 billion in the United Kingdom alone. The estimates were £1.35 billion in sales in 2005.[19] MarketingSherpa's research team estimated that, in 2006, affiliates worldwide earned US$6.5 billion in bounty and commissions from a variety of sources in retail, personal finance, gaming and gambling, travel, telecom, education, publishing, and forms of lead generation other than contextual advertising programs.[20]