I'd also like to point out (though on this thread most are using the correct terms) that "maiar" is plural. I have noticed in other threads (and the tongue-in-cheek title of this one) people using it as singular. And being an easily peeved person, it's really beginning to make my hair stand on end. One Maia, two Maiar. One Vala, two Valar. One Ainu, two Ainur. One Umaia, two Umaiar. One potato, two potato, three potato, four. There--I feel much better now.
(I sheepishly recognize that my inability to place the appropriate accent marks over many of these names, including my own bloody screen name, is probably raising others' hackles as much as this raises mine.
)