Using all geo-located image tweets shared on Twitter in 2012-2013, I find that the volume of tweets is a valid proxy for estimating current GDP in USD at the country level. Residuals from my preferred model are negatively correlated to a data quality index, indicating that my estimates of GDP...

This paper contains three important contributions to the literature on international migrations. First, it compiles a new dataset on migration flows and stocks and on immigration laws for 14 OECD destination countries and 74 sending countries for each year over the period 1980-2005. Second, it...