I'm the main admin of the nesdev wiki now located on parodius servers.
I started to get interest about nes programming since a long time ago but never had the chance to put any time in it. I started officially to experiment with it in june 2008 as a way to change my mind from my current programming task I had at work (flash in AS 2.0, terrible).
Since then, I started to build my how generic map editor in C# and still working on it when I can find the time. I needed to find some test data to see if it worked properly so I ended up making Concrete Man stage map. Since then, I have been working on my game engine which will be used in the Mega man 9 proof of concept.