For millions of South Africans, income is earned by informal activities, such as the selling of secondhand clothing on the streets, often sourced from white employers or sold out of automobile trunks - a thriving business on weekends. Much of South Africa's cities visually reflect the traditional trading practices that are distinctly part of the landscape of Africa: a jumble of household goods, clothing and traditional herbs which are used by medicine men or "witch doctors," known as "sangomas," in place of conventional western medicine.