Martin is explaining the simple rules of the Stovebolt:
One rule/custom/etiquette is to attempt to assure that posts that are not useful to posterity are posted only in the Swap Meet (there is a "freebie" section). This rule/custom/etiquette might not be apparent to relatively new members.
It is VERY NICE of you to post freebies.
Swap Meet posts disappear after a short period of time.
Posts in other forums never disappear.