[Pan-users] Scoring question

[Joe Zeff]

One of the groups I follow is intermittently infested by an 
exceptionally obnoxious troll.  He clearly knows he's not welcome, 
because every time he shows up, he's posting from a different email 
address to get around killfiles.  However, he always uses the same name. 
 Is there any way to force Pan to score on the name, instead of the 
email address, so that I can block him once and for all?

For that matter, is there a way to force Pan to mark all posts with a 
score of -1000 as read as they come off the server, instead of having to 
do that manually, or should I report that to Bugzilla as a bug?