Vad, the problem is that you're posting links to illegal copies of copyrighted material. It doesn't matter that the site you're linking isn't yours, you are promoting theft of someones intellectual property.
I think its very interesting how people can so easily excuse themselves from guilt by saying something like "Hey, I didn't put it out there". Its like saying that if the contents of the local grocery store were left unguarded for a moment you'd be ok taking it because after all, you're not the one that left the door unlocked... Its someone elses fault.
In fact its someone elses property and just because its unguarded doesn't mean you aren't stealing.