Some of the illest, original dubstep I've heard on NG yet. This is fucking excellent. However, there is a wee bit of room for improvement:
Mastering. Oh yes. Mastering. This could stand to get some moar of it. Make the bass a bit more pronounced. Separate some of the frequency ranges between the synths and whatnot. It sort of blends in a little too much, ya dig? Especially when there's more going on at the same time.
The ambient synth (not the pizz one) I would strongly recommend you for something a little better. It works, but not too well. It drowns out too much of the track. Actually around 0:35, you begin to hear how it interferes a bit too much with the rest of the sounds.
Otherwise, in terms of concept, composition and overall idea: Fucking excellent.
Give yourself a pat on the back. Wimminz should be throwing their vaginas at you (or guys their dicks, if you're a girl).