Hey Grandpa (and photohammer)--thought you'd be interested to know that since the CVS machine got up and running again, it looks like there is some work on a spamfilter is being committed. If the server is up, you can see the submissions at
https://www.limewire.org/fisheye/changelog/limecvs/
I can't read code, but guess this means a user defined filter is not as far away as I would have guessed.
Cheers