An increasing number of people are moving between developing countries or internally. South- South migration is nearly as large as South-North migration. Approximately 74 million or nearly half the migrants from developing countries reside in other developing countries. Intraregional and domestic migration in developing countries is often far more important than overseas migration in terms of the number of people involved, especially from rural areas. Almost 80 per cent of South-South migration is estimated to take place between countries with contiguous borders, and most appears to occur between countries with relatively small differences in income (Ratha and Shaw 2007, 3-11). Since benefits tend to be lower and risk of exploitation greater , interregional migration in.