> There is nothing dark about helping a user using single opt in.
Someone thinks my email address is their email address, and keeps filling it in in various places as "their" email address.
They seem to live in France, and so the things they sign up for are in French.
Sometimes, these are double opt-in, and I can just ignore them.
Other times, I suddenly have to figure out how to unsubscribe from a newsletter that's in french.
Often, the "unsubscribe" link is just a mailto link to their customer service, and now I have to hope they can understand my English as I ask them to remove me from their list.
Also, this same ne'er-do-well has taken out loans with my email address as one of their few pieces of contact information. So now I have a loan company trying to get money from "me." Obviously, loan companies aren't going to be very accomodating when you tell them they have the wrong address. That's what they all say, no?
(It's not quite identity theft, as the loan people really are after the other guy, not me. It's not my credit score being impacted. They just emailed me because mailing the address on file, phoning the phone number on file, etc. didn't work.)
Wouldn't it be great if I could contact this person to tell them to stop? Well, think about how I could accomplish that for a moment. All I know about them is... my own email address!