I recently started using spamgourmet addresses for my usenet posts.
It took slightly under 1 month for one spam to just arrive. I was suprisied, generally spammers are much faster then that, and for a moment i thought spammers werent borthering sending to spamgourmet addresses.
After some thought i realised it was something else much simpler, i.e google wasnt archiving my posts . I did another test without the x-archive, lo and behold, spam came after a week.
Oh what was I rambling about, oh spam reports, I signed on to spamcop and it did a spam analysis, I was concerned it would report spamgourmet, because after all it forwarded the message, suprirising , it didnt, at least in the emails sent it wasnt sent to any ip belonging to spamgourmet hosts.
Cool!