Elimist, you can always deal with people who are living in the respective countries that you are interested in. There are a wide variety of people living in different countries so chances are you'll find what you want. I've been doing some nice trades with a few Americans for their State Quarters and I've sent some Australian coins in return. It works out to be great. 
My partial coin collection http://www.omnicoin.com/collection/gxseries
My numismatics articles and collection: http://www.gxseries.com/numis/numis_index.htm
Regularly updated at least once a month.
My numismatics articles and collection: http://www.gxseries.com/numis/numis_index.htm
Regularly updated at least once a month.


















