Migration is one of the great driving forces of human progress and development. The movement of people around the globe has contributed many stories to the shared history of humanity. People have moved all over the world for a variety of reasons: for example, to increase their economic opportunities, to provide their children with an education, to found a family, to embark on an adventure or to seek protection. In turn, migration has led to the proliferation of languages, cultures, cuisines and ideas throughout the world. Global migration today is one of the great by-products of globalization, and yet the exploitation of it by profit-seeking criminals represents a darker side of the phenomenon.