I realize I have been remiss in updating my link to Patch-L. Patch-L had to move to a new home from the List Serve previously hosted by SUNY Buffalo. Budget constraints led to the removal of groups which were not affiliated with the University.
It is now a Google Group. For those who are unfamiliar with Patch-L, here is how they describe themselves.
Patch-L is an internet discussion LIST aimed at furthering the principles of the Scout Oath and Law in the hobby of collecting Scouting’s patches, badges and memorabilia. Subscriptions are free and open to members of Scouting programs associated with the World Organization of Scouting movements. Membership is not automatic, however, and potential subscribers must provide background information that will be reviewed by the list owners who will ultimately determine whether an applicant can join Patch-L.
You can join Patch-L by filling out a short application form. As of this post, there are over 500 members.