Should I Roll?

.....or should I fold?  I'm talking about my clothing in my luggage- gripping.
Danny and I are backpacking rookies but this I do know, we are both folders.

I have done my reasearch about this very topic and I find that the majority of people in the budget travel world suggest rolling your clothes over folding- But why?

I rolled my clothes the first time I packed my bag and the were all messy, wrinkled and I don't feel that I saved any room in the process.

So after all my rambling, here is my question for you......and by you I mean Lisa:) 
On a side note, I wanna give a special shout out to my lovely friend Lisa.  You are my first- follower :P

Do you roll or fold?