[Spambayes] A couple questions regarding spambayes and it's features

[S James S Stapleton]

Background; I've been using Spambayes for a while, it starts out good, quickly 
is trained to great, but at some critical point drops to crud.

At the great state, I get no false positives, and the false 
negatives/uncertains are low. But spammers change their tactics and I have 
too keep training to keep SB in the great state, until at one point it gets 
overtrained and *everything* pretty much goes into spam and I just get the 
few (1-5%) false negatives, and some mailing list stuff, in my box.

(1) Is there any way to whitelist email addresses? The only address I get spam 
from regularly is when they spoof mine.

(2) Can values be modified and locked? For example, I'm part of several 
mailing lists which tag their emails, [PyQt], [PHP], [PHP-WIN], [SDL], etc. I 
would like to be able to mark those tags, and some common keywords things 
like that as 'minimal spam probability]. Add to that some keywords I know 
I'll never see in a legitimate email, I wouldn't mind fast-fowarding them to 
the 'this is a spam word' state.

Please CC me any responses, as I am not on the list.

Thank you,
-Jim Stapleton