| I'm confused. Are you advocating a central registry of all browser owners,
| where the browser checks that registry, asks me to match the password, and
| then lets me send mail?  I think a public key system would be simpler,
| safer and more private.
Only centralised in a local sense :-)
e.g. students in a public access lab being required to supply a valid 
user name and password to a local "authentication server" before the 
browser will allow them to send mail or post news.  The authenticated 
user name would be stamped on any messages they sent, say as an X- 
header
At the moment it's ridiculously easy for casual WWW users to forge 
messages.  This is just a quick hack which would make it a bit more 
difficult.  Perhaps too difficult for the majority.  Sure, public key 
would be nice too, but more effort is involved!
Martin