I'll do my best to revise/further clarify in the original post to avoid confusion ... this isn't about whether or not the games work when inserted into an NES ... as there are WAY too many variables to take into consideraition in that equation.
The short short is that I want to see what the physical damage to the metal contacts is after 30 days of daily abuse via "blowing" onto an NES cartridge.
I would venture to guess over that short a period of time the game could easily be "rescued" with simple cleaning products, and it might even work if inserted into a toaster or top loader ... but that's not the point of this test.
There are people out there that A.) Don't realize that blowing into NES (or any cartridge games) potentially causes damage. and B.) Don't believe that it causes any type of damage at all. I just want some nice visual physical evidence that there is a damaging chemical process that happens when you do this, even if it does in-directly cause games to boot on a toaster NES with a higher degree of success (for whatever reason that is ... moisture increasing conductivity, repeated re-insertion causing a correct connect ... etc.)