Well, the only part of that that's odd is the "don't use this address for any reason" part. You IP address gets recorded at virtually all web servers anyway without them even telling you.

And phone companies send me checks all the time where if I cash them I get my service transferred.

I don't know. I understand your points, but the user of the email address is doing something active with the data on that page. I don't see how that's much different than saying "here's some source code, but you can't use it unless you also release any changes you make".