[Draenin]

What each god is for:

Govannon: Newbies, and people who actually know how to use weaponmagic correctly.
Balor: People who like to run around yelling, "LOOK MA I CN CAST SPELLZZ LOL!"
Brigid: Kickass Mages
Aegnus: See above
Diancecht: Nobody really follows Dian, so...
Ogma: Adding Poison Damage to weapons.
Leucetious: Adding lightning damage to a weapon.
Bile: For those lazy enough to not go out and get food, and for killing the laughably easy enemies on GK in one swipe. (Or people without much AC.)