Meh, I've had peeps make real life threats to me all the time. I just offer to give them directions to where I live. If they mean it for real, they can have thier chance. If they are full of malarkey, thier bluff is called.
I wouldnt worry bout it eViL, lots of kids and idiots online, no need to bother with them. Ignore them long enough and they will go away.