I'll have to dissagree somewhat with Atherne. Focus, while not the bread and butter of a tank class, is still important enough to devote at least some time into. Especially if you plan on doing anything solo or if you get stuck (as you often will) with out a healer. Why? Potions. Being able to use a potion in combat will save your life, without focus you'll be interupted and may very well perish. Even with a healer there are times when a little extra healing is nessicarry. Also, being able to recast a fragile diety pet in combat can make a difference. I'll agree that focus is less important to us meatshields, but having your focus up can and will help your combat.