I'm glad to see that there is still some interest in this idea and that one (or some) of the boxes is still migrating. That being said, it is unfortunate, although not entirely unexpected, to see the contents degrade in value over time and for the ultimate winner here to be USPS.
And just to answer Nathan -- there was a mid-America box (or Eastern as it was) floating around here somewhere. Just put your name and info on the spreadsheet linked to the thread's first post to get involved.
So, I will throw out a few other thoughts and ideas as I have watched this evolve:
First, for all of those who may have not gotten a chance to receive a box and responded with 'I have plenty of stuff to add' -- why not just start your own box and send it to a random member on the list. Surprises at the door are usually welcome and that is the PIF spirit of this. Keep your own name on the list until you receive a box.
Second, it is true that one man's trash is another's treasure, but if the box is just a bunch of junk then clean it out, add some stuff and move it along. Donate, throw away, whatever -- it doesn't need to be a big debate. If you take nothing from the box I see no reason why you cannot stay on the list for a chance to receive a box that may have more items that are valuable to you (still taking a chance mind you).
And lastly, if this idea has run it's course then so be it -- it was fun to see all of the posts as people sent and received the boxes. It was never intended for everyone to be wasting hard earned (gear!) money to be shipping around a box of junk.