Usually a list is complied via private message, as we don't want to give out our address in public view, if there is more than 10 or 20 the participants are usually asked how many they would like to send out this year.
Since it seems to just be us and perhaps, hopefully a few others it gives us a chance to become pen pals and hopefully make friends.
I participated a few times, and loved it. As soon as I get home from work, I'm going to PM my address = )