Once you subscribe to a list, it is customary to send a brief message to the group introducing yourself and describing your interests. Be sure to save the introductory messages for future reference. This is most active forum for fossil enthusiasts and rockhounds.
Most members are amateurs, but many teachers, paleontologists, and dealers also participate.
Topics include collecting sites, specimen preparation and identifications, show announcements, museum and club info, literature and Internet sources, etc. Be prepared for 10 to 20 messages per day. It is newer and less active, but growing in popularity. Subjects range from dinosaur classification and nomenclature to evolutionary relationships, literature, meeting announcements, questions and answers, philosophical debates, etc. Expect about 15-20 messages per day.