Kick-a**!
I, being a NIN fan, LOVE this song. It's very dark (which is a good thing), and has a good beat propelling it along. The bass guitar riffs, while being dangerously similar to those of a real NIN song, fit perfectly and add a nice "raw" element.
I did listen to your original Disfunction, which I thought wasn't bad, but you have definitely improved it tremendously with this version. This will be a great song to work out to. Good stuff!
Please give my song a listen if you have some extra time - thanks!