Ok, I never plug blogs, but I'm going to make an exception here because I actually know this guy, and he knows some crazy stuff. And he's going to share it on this blog of his, so you won't want to miss this.
Seenstr - Hacking Human Nature
Seenstr is a kind of social engineer, and he spends most of his time figuring out how people work. Ah, I won't babble on too much about him. Just check out his blog, bookmark it, and prepare to get a brain-full of insights into human nature.