This probably isn't a good idea, as many members are either unable or unwilling to give a "real" email address. He-man.org requires their members to use their ISP email address, but it has been that way for a long time. Suddenly requiring all current members to do this here would likely cause more problems than it solves. I wouldn't be opposed to new members having this requirement, but I think the older members should be "grandfathered" in.