This document summarizes a study on the role of online communication and social networking sites in migration from the United States to Mexico. The study examines how social networking sites may be replacing older migrant networks and programs by facilitating increased contact between individuals in the US and Mexico. Younger migrants and students with ties to the US appear more likely to use social networking sites, which could increase the likelihood of further migration. The document outlines the quasi-experimental design of surveys administered to students in Mexico and the US to compare the impact of online versus offline contacts and networks on relationship formation, maintenance, and migration behavior.