Sure, I agree in principle that we're heading in a direction that makes what you suggest possible. And this proposal does cover part of that: if somebody has a macports.org account, they can just use the user name portion of their email address. But we need to bridge the gap between the now (when we don't have any good way for people to get accounts if they're not committers) and the fact that most of the maintainer email addresses in those files don't belong to committers....and we'd like to find a quick and easy way to mangle them out of sight of some of the spammers.