I'm a consultant. Not very often. Amazingly effective, actually, at catching natural language requests and not catching non-requests. The problem with that syntax is, there's no way to subscribe an address other than the one the mail appears to come from. A slow machine gives you more time between iterations of feedback loops, for instance.
Similar arguments apply to slow network links.
Actually, this is nothing. Anyway, sorry for the inconvenience. Compressed back issues are available for anonymous FTP from FTP.GreatCircle.