
Last year I gifted around 400 post-paid postcards, each with a different photo taken over the previous year. The burner selects their desired card, writes their address on the back, and puts it back in my box. I then deliver the cards to to the Black Rock Post Office, where they make me cancel them all (which I love doing).
Before sending them off, I photograph each card. When I got home, I load the images of the cards into this site:
http://spacebuilt.com/burningman/
People can claim their cards and leave a note. I love the notes that have been left so far!
If you have a card and haven't claimed it, please do.
-jeratron