Bah writing isnt a cheap option. I mailed a post card from greece to illinois, it was expensive. Dotn remember the cost. WHile your there go to an interet cafe and post up on zel!
I assume that's what he meant... there are a lot of cyber cafes in Athens and some on Crete. I don't really remember if there was one in Santorini but I don't think so. Greece is one of the most beautiful places I have visited and I hope you really enjoy it. When I went I took a "cruise" on a 40 foot boat with a few families so we went to a lot of the islands.