I was expecting a list of actual Angel names and was disappointed with the list. They are really nice names, don't get me wrong, but if you search for the wikipedia entry on Angel names you find a huge listing of actual names.
The wikipedia entry has Angel names from Christianity, Judiasm, Zoroastrianism and Islam, but only a few of them matched any names I checked off this list.
This does not invalidate the usefulness of the list. For $.50 this is a great list for powerful names for celestial beings that you might be using in your adventure.