The problem with trying to put RSA signed keys into Usenet is that it is simply not that simple. People aren't going to adopt the software overnight; it will take literally years before they adopt the software. In an earlier message, you said: Well, the folks running B News and C News will have to live without the public key extensions, and it will be their fault. The people with the public key extensions will have the benefits. That's just not true, and your proposed solution demonstrates that nicely. Until the majority of the poeple are posting signed messages, it is not useful to tell your newsreader to nuke all non-signed messages, as you suggested in your proposed solution --- you'd just be throwing out the signal with the noise...... Until nearly everyone on Usenet starts using the public key extension, we *all* will not have the benefits. There will be no way to distinguish the good (but unsigned messages) from the remailer abusers' unsigned (or untrusted) messages. - Ted