My old PO Box, which I had for over 12 years, is now closed (long story, involving my own laziness and one very unhelpful clerk, which in my experience was unusual because other clerks have been very friendly and helpful). It's been down for about about 4 months, and some people have told me they've had their mail returned, and I'm sorry about that.
NEW BOX:
PO Box 38061
Saint Louis, MO
63138
USA
(also new zip code)