OS X :: Not Receive Commercial Email From Apple - Changed Email Address?

Through the years I've clicked this, over and over: "If you prefer not to receive commercial email from Apple, or if you've changed your email address, please click here." I'm trying to detect a pattern. I suspect that every time our family buys a new apple product we are hit with advertisements. I recently bought a new iPod Touch. I wonder if this is why the offer from apple to leave me alone fails, over and over.