Loss Leader
I would save the receptionist., Moderator
Why not illegal in any way? Supposing I am arguing with my repairman or doctor about a bill, and I say to him, "There are more ways to deal with you than through an attorney." I think he would take that as a veiled threat, and report me. If such a thing were actually said, and I were the target, I would use all at my beck and call, legally, to check it. And fast.
See what you did there? You changed the audience from everyone on the entire internet to the very person you're threatening. Probably, this would not be a specific enough threat for the words alone to form the basis for any legal action, however we don't have to reach that issue. Why? Because you are not arguing with Amanda Knox. She's not reading what you write and you are not addressing her.
Also, we've firmly left Incitement to Violence and entered the Harassment arena.