I dare say that it's worth opening a thread about it purely for the sake of letting more people know what you should bless. Just go through the posts here and you'll find people who didn't know how the blessing system worked fully until reading this one, so I dare say this thread has already done a good job helping out. Plus I can always hope it'll help me (and others) in the future to see more Retribution paladins buff right and not have me/them explain all of this over and over and over again.