I'm glad you and your tank friend found the guide and discussion thread helpful and readable. Please use a PM to thank someone though, as it keeps things more focused and makes it easier for other visitors to find what they're looking for.
Tyvi, I have been reading EJ for years but never posted anything. And I don't even play a DK. Well, I have one at 57. I'm more of a ranged caster type myself. But I came across your guide yesterday and read nearly the whole thing just because it is such a well written guide! I wish to find one for the specs I actually do play that is comparable to this. I referred the main tank I raid with who play all 4 tank specs to read this for info on blood spec in MoP and he started reading it and immediately thanked me for tipping him off to such an excellent guide.