Four days is low for this application, I think. SpamCop is a pain to test too, though.
Is there so much churn among spamvertised sites on the SpamCop list that this would be a problem? Keeping the expiration time low would minimize the effect of false positives, especially from joe jobs. What do you think an appropriate expiration time would be, and why do you think so?
Do you know anything about how SpamCop generates their spamvertised sites page?
http://www.spamcop.net/w3m?action=inprogress&type=www
It appears to be a close to real time report based on submissions from ISPs or other spam gatherers. I wonder how much checking they are able to do before putting a URL on the list.
-- sidney
