I belong to clubs where the "message all members" is used excessively. I'd go for anything that would reduce the number. Since the purpose of clubs is to get like-minded people together, use of the club forum should be encouraged for all members, rather than having to receive spam-like multiple edicts from the club leader. Club members should be expected to check an Announcements / News thread in club forums to keep up with what's going on. If you belong to a club in the "real" world, would you expect the organisers to email you every time anything happened?