This page has been retired.
The retirement of this page had nothing to do with the security risk of the demonstration, threats from any company, etc. Rather, after the Peacefire site was ported to a new server, the scripts that demonstrated this exploit were no longer working properly, so I took them down.
Besides, most people are now using more recent versions of Eudora which are no longer vulnerable to this trick.
If you really want to know how the trick worked, email me.