What site was the "opt-in" to? I didn't seen any signup at gangbangfest.com where these files are hosted. They could have quite easily been complaining about the company that was sending me a minimum of a dozen a day, 41 in one day at the peak (all with different from addresses and subject lines designed to bust filters). I was polite in my e-mails to the contact and it took a couple of promises and nearly a month to be removed. The contact also said theirs was an opt-in list, which was bull because it was an address I used only for a couple of usenet groups.
I also have an increase of porn spam to a couple of my webmaster addresses. I
know I am not signing up for porn with them. I guess they figure if they spam me enough I will look at their programs and decide to sign up under them. I
have signed up to programs that are spammed to me by affiliates and I remove the ref code when I do.
