Ok. So I have a handfull of cards and I'm one of those people that reads everything and likes to register my products for a variety of reasons.
The booklet that came with my boards has a lovely Product Code that is just longing to be entered into some field on either my.arduino.cc or my.arduino.org...
Thing is, I cannot find any field that has anything to do with product registration anywhere on either site. Also, it might be an effect of the unification of Arduino, but my.arduino.org just presents an insecure login.