Re: Raindance
1. You could’ve said this to him via PM. This (saying this to him in public) is the first step towards a fight.
2. There’s feedback forum for such questions.
3. Simply put that person on the ignore list. It will still show you the name but in the reply box, you won’t see any text, I think. Try it and you’ll find out.
4. Now that your concerns have been answered, there’s no point in keeping this thread open as it’ll turn into a fight.
Have a nice day all 
Edit: Yes, there is somthing called an ignore list.