"I know where you live and am prepared to commit crimes" sends a bit of a message, don't you think?

Intimidation? She is also wearing a mask and is extremely creepy.

I agree with the OP, this is creepier and more personal (being his home) than getting drugs mailed to him. Or continually DDOS'd..

They wanted to show they were such l33t hackers that they could even hack down trees?