Mails with an unsubscribe link coming to my inbox without me having subscribed, get subscribed to my spam folder (which is then automatically fed to Pyzor, Razor etc). They asked for it. I don't even bother unsubscribing as that would only confirm the mail address used exists and is read by a human.

I even thought about automating that ("whenever there's an unsubscribe link…") were it not for a few legit ones…