Michael Rathbun recently commented on my old 2007 post linking to his "Story of Nadine" website. He notes, "A while back I located an obituary notice for "Nadine". She still gets between 50 and 200 messages per day, all of which now feed the Spamcop service."
Neat. (And sorry to hear about Nadine.) If it were me, I'd probably make it all bounce for about a year, then see if somebody at Spamhaus or other spam handling services wanted copies. By that point, it would be a pretty pristine spamtrap. And it would still receive tons of trash.