There seems to be some confusion regarding the rules for my current batch of Room Key Round Robin groups. Participants - please re-read the following information as copied from the original sign up announcement...

I'm looking for casino room key collectors that are interested in participating in a round robin. For those that haven't participated in a round robin before, the process is pretty simple...
-I'll gather the names of those interested in participating.
-I will then send 100 different casino related room keys to the first person on the list.
-That person takes as many of the keys as they want out of the ones they receive, replacing them with their duplicates, one for one, making sure not to duplicate any of the keys already in the group.
-They pack the keys up and send them on to the next person on the list. This process is continued with the last person on the list sending the keys back to me at the end.

There are a few rules for this round robin:
(1) Only casino related room keys are being traded.
(2) Priority Mail with Delivery Confirmation should be used for all shipments. I'm planning on using pages to hold the keys and using a quantity that fits comfortably into a USPS Flat Rate Envelope (the cost to ship should be roughly $5.50). If purchasing the postage at the USPS website, delivery confirmation is free.
(3) Once you've received the shipment and have finished with it, please post on the message board when you've put the shipment back into the mail (and the delivery confirmation number), so the next person on the list can watch for it.
(4) Due to the Priority Mail requirement, this round robin is limited to shipping addresses in the United States.
(5) Please try to turn the shipment around as quickly as possible.