Warrior Fury Talents
Before going into the talents themselves, there are some good talents in this build which will help you maintain more threat. The problem with fury is, that it needs gear to work well, and to tell you the truth, when you're tanking you're also trying to mitigate damage. Enrage should never pop on you, you shouldn't get critted. Your critical strikes will be around 10%, so Flurry won't trigger that much ( Sunder Armor can't even crit either, although white hits can). Death Wish is a difficult card to play and won't be useful in all situations, because again, you're trying to mitigate as well as maintain threat. Personally, I will stay Protection for tanking, it offers more mitigation, and someone skilled can hold threat perfectly with a Protection build.
# Cruelty: Increases your critical strikes by 1% per point. Very nice even for a tank, because not all that you'll be doing is mitigating damage, you need to hold aggro as well. This is not a breaking talent, you can pass on it and I've used builds that didn't have it in and worked just fine, but that's because Skill > Talent Build. IT is a nice bump, and those crits will help every now and then, not to mention that they will give you extra rage, so I'd use it.
# Improved Demoralizing Shout & Unbridled Wrath: If you decide to go deeper in the tree, whatever you pick, Unbridled Wrath or this, it won't matter much. This, I guess, would be the mitigating talent, and Unbridled the Threat talent, but the bonuses of each are quite slim, so you won't notice huge differences whichever you pick. Unbridled can give you an extra point of rage for the start of fights if it triggers, which can be quite useful at those points, but that's about it.
# Piercing Howl: Causes all enemies near the warrior to be dazed for 6sec. Useful for certain fights, like Razorgore, depending on the strategy of your guild. I don't have this anymore and I don't really miss it, but it's not a bad talent.