Ian Ward's email:
first name at this domain
wardi on OFTC, freenode and github
Just adding my voice to the chorus of people praising Manufactoria.
I played through a earlier version months ago, but had to come back and try it again. The latest versions let you flip parts and easily move and rotate sections of your machines. And the new "Malevolance engine" jumps straight to your flaws or validates your designs almost instantly. If you like writing software, you must try this little game.