Q. What does your URL mean?
Moony was Remus Lupins nickname, goodnight is saying goodbye. So it means saying goodbye to Remus because he died. I know sad stuff.
Q. What do your domain mean?
Avifors is a transfiguratiom spell that changes the target into a bird. The spell appears in many of the Harry Potter video games. See here
Q. How old are you?
I am 21.
Q. How many followers do you have?
Come off anon and ask.