You all may have family in South America and not know it. I knew before I started that we had family there. Since I know my nonno's half brother immigrated there I decided to look him up. I did not find him but, I did find at least 20 different people with surnames from my nonno's hometown. And the data downloads nicely into Excel. Go here:http://www.apellidositalianos.com.ar/
On the menu at the left click on Listado de Apellidos then click on base de datos. From there you can either click on Ir a Buscar Apellidos which will give you a drop down menu of all surnames (nice if you want to browse all surnames) or you can type in an exact name to search. The results page will give you results that include region, province and comune with an email of the person who submitted the information. Try it - it's fun.