You know, when I first read PoA (oh...three years ago, maybe), I knew a person who had already read it. It was right around the time when I first began to realize that I was in love with the series. I looked the person straight in the eyes and said, "Don't you dare tell me what happens." This person looked me straight in the eyes and said, "Scabbers is really Peter Pettigrew in disguise and Sirius Black is really innocent."
So, you see, even though PoA is still my favorite book of the series, I'm sure it would have been just that much better if I'd actually enjoyed the surprise through JKR's words rather than another person's trechary, gossip, whatever. I may complain to want to know. But I'm very patient when it comes down to it.
Half of your entries have something to do with spoilers (from my quick glances). I don't wish to take the risk of stumbling across something. I'm going to enjoy this book if it's the last thing I do! Goodbye until afterward. :D
EDIT: Oh fucking hell.