While I don't follow it, "Caodao" refers to a Vietnamese religion. Ironically, I know little of it. I just chose the name because it sounded cool and because some of my oldest friends were Asian. I don't know if that second reason makes any sense, but there you go. The "2" part was thrown in because that name was chosen elsewhere a lot. I think I tired to use just plain "Caodao" in some places, but it didn't work because someone else had taken it.
So that's the story about the name in a nutshell.
