The links between migration both internally and internationally and its effects have been increasing at regional and international policy levels. According to the official statistics from the International Organization for Migration (IOM), about 214 million people moved and worked abroad in 2010, compared with 150 million in 2000. It is worth noting that remittances transferred from migrants to their home country have increased by 3.5 times in the same period, estimated from USD 132 billion in 2000 to 440 billion in 2010, especially nearly 80% remittances sent by migrants to developing countries. This book consists of eight survey-based papers prepared by a team of contributing authors on various aspects and in an internationally collaborative effort. The aim of this book is to provide potential readers with a richer understanding of the current situation of migration, particularly from the developing world.