I was very interested in letterboxing also. I've just finished carving my own set of rubberstamps to use, one to take with me, and one for a cache I'm planning to make in my own area. When...not sure, but at least I have the stamps now! :-)
Is there a central site to post clues/locations of the letterbox as there is with geocaching?
Thanks for the help for this newbie,
Angela <><