Hunter 101: Reforging and You
The subtitle of this post could very easily be “The Importance of Having Haste”, as I go in to great depth about the value of Haste to us.

First, what the heck IS reforging?
Reforging, as explained by the Arcane Reforger NPC:
For example, if an item afforded you a bonus to strike your enemies but you’d rather it made you attack more quickly, an Arcane Reforger could, for a price, reforge the item to have less Hit Rating but increase your Haste Rating.
So basically, you have the option to forge a less desirable stat into something that you actually want!