That program allows users to trade-in a third-party USB charger for a discount on an official Apple charger, and was created following the electrocution of a Chinese woman that may have been caused counterfeit iPhone charger.
They should also replace some of the 10watt chargers, I've had two that died with a bang. Both of times they also killed my iPad.
You may want to check into the electric service. That's starting to be pretty bad.
Now time to put the green dot on the good ones
It is foolish to think you will be OK just because it hasn't overheated over the last two years. You should get it replaced as should anyone that has an affected adapter. Don't take chances.
I still don't understand why they want an iPhone serial number. I have two of these models: one that came with my iPhone 4 and one I bought afterwards so I cloud keep one at home and one at work. If they're exactly the same, shouldn't the both of them be replaced?
I had problem with this kind of adapter. Have a look to this photo. The only problem that I am not sure, because I have a lot of old iPhones... maybe it is from the very old one, because it looks not genuine a little...
https://www.dropbox.com/s/n34bzj73jipten4/Photo 16-06-2014 10 40 10.jpg
The iPhone requirement doesn't make any sense to me at all, especially not since they sold them separately. I have two affected chargers, one from an iPhone, one bought separately. Will probably first try to exchange them without showing the phone just for fun.