Hmmmmm..... I've been reading up on the item rewards in the Updated Avatar Info page, and so I've a few questions...

1. What are these "crafting recipes" involving the Poor/Materials? 
2. Besides EXP, what is the general level of power between Common, Rare, Epic, and Unique items?
3. What exactly separates Unique from Epic? Are they one-of-a-kind items or something, as their name suggests?
4. Does the amount of EXP converted determine the power of the items? I would assume so, but it's best to make sure.

If any of these have been answered in the past, I apologize since I've missed quite a bit.