Check out this gem:
"I use spammers and pedophiles as test subjects when I’m working on something. This is mostly because it’s unlikely that they would go to the authorities and point the finger at me, knowing that I could easily turn around and say something to the effect of, “Well, yes I did pwn his box.. but you should have seen all the child porn I found on it.” owned x 2."
Well, owned x 3 because the first thing that this would do is backfire, after all if you admitted to hacking someone's box they could make a fair claim to you having put that data there.
The last thing you do when you go after a pedophile is to hack their computer, any evidence found there is tainted, and you are now a suspect with a confession on record.
There are several other laws this guy broke in his vigilante action against this spammer, he's set himself up quite nicely for a lawsuit, after all he's handed the prosecution all the documentation they could possibly wish for.