Could one or more of the readers of this list answer the following question which come from my use of mailing lists : --- Is it possible to know all of the lists which exist in the world ( or at least those served by LISTSERV ) --- I was rejected by some list owners because the list was sort of private or because I was not in the service area : I suggest that these lists should be specially marked when a user ask for the list of the lists served by a LISTSERV . Thanks