Fred Dittmar, of Diggin' Deep Genealogy Research Service in Norman, Oklahoma, is the List Administrator for the Ghost Towns of Canada and the US mailing list at RootsWeb. You can contact him at firstname.lastname@example.org for questions about the list.
Fred says that he started "12 Rootsweb mail lists late last year. There is one for each Province and Territory in Canada".
He explained that (as the site itself says) that 'This list is for the study and researching of town names, residents, history and locations of abandoned ghost towns, camps or posts that your ancestors lived in, passed through or you have a genealogical interest in, in the Province of British Columbia, the Province of Alberta etc."
Fred adds that "The mail lists are only as good as the people who post and talk with each other. That's my motto: Post a lot, talk a lot, have fun, be nice and help each other but don't forget I have a size 13 shoe. It works……lol Thanks again Fred".
You can reach the list at: http://lists.rootsweb.ancestry.com/index/intl/CAN and search "ghost towns".