The pledge bags that guards/NPCS give you are now soulbound, so you can no longer trade them (like you could in the past) to others.

The title does require level 80, since you have to go to strat and naxx (you don't have to kill anything, but you have to be 80 to zone into naxx). To be honest though I don't think many people are going to be getting the title unless Blizzard hotfixes something, the bag of candy is not dropping very often and you need to pull 8 different candies out of it (and each only has 10 charges). Some people are lucky and getting 3-4 bags, I have the achievement completed on one of my guys, but another one of my guys has gotten 0 bags of candy in over 20 pledge bags the past 2 days.