A beautiful collection of books that you write yourself, in a series of letters to your "older and wiser" self, your baby, loved one, mom or dad...
37,436,017 postcards received
413,062 postcards traveling
117,236,180,567 miles traveled
4,708,006 laps around the world
“It's like Twitter for snail mail, it lets me interact with people all over the world, it gives me a taste of other cultures, it gives me something to look forward to in the mailbox everyday. Surprise! A postcard from Germany! :)”