[Spambayes] expiration ideas.

[Anthony Baxter]

>>> Anthony Baxter wrote
> Note also that I'm not so much worried about adapting to spam as 
> adapting to changing ham patterns. I know that my own email changes 
> over time (for instance, until this project started, I doubt the word 
> "Nigerian" would have been considered a strong ham indicator for me :)

Another thought - if we were to ship a package with a small "starter"
wordinfo dict, it would be very good if this was gradually expired 
out. Two reasons I can think of: the gradually adapting wordinfo will
end up better representing the user's real usage, plus it means anyone
out there starting with a standard wordinfo won't be vulnerable to 
spammers picking up words with high hamprob and deliberately inserting 
them into their spam. I imagine it's highly possible we'll start seeing 
things like 'wrote:' appearing, I'm already seeing spam with 'Re: ' in 
the subject (but as yet, no 'In-reply-to' headers...)

Anthony