I have played around on Polyvore a few times but never did I come up with any collages like the ones above. There is this whole mini ecosystem going on of super edgy people putting together the coolest collages. I spent hours going through them, I higly reccomend checking it out or trying for yourself. There was even a few TwistedLamb ones from images pulled from the blog...rock on.
If any of these are yours, lemme know. Polyvore