I was never one to root for Harry and Ginny, but this book made me want to see them together so much! I agree that the whole relationship stuff was thick and teenage in this one, but I found myself getting excited to find out how they were going to get together, as well as the whole Ron/Hermione relationship. It does seem obvious that they will end up in those pairs, and I hope it does.
I had not thought of R.A.B. as being a Black, but I do think it's a good theory. I also looked back through the book looking for the first names of Borgin and Burkes, but could only find one of them in my quick skimming. Didn't Hermione see that locket in their store in Knockturn Alley? Hmm, I tihnk I will need to read it again soon to pick up on the little details.
I found it interesting to find out after so many books that the DADA position really IS cursed- since that has been casually mentioned by the students in almost every book. Very cool.
I was definately very sad by Dumbledore's death- it's so hard to imagine an HP book without his guidance to the younger characters. But, I think that Harry will somehow still benefit from his guidance, even without him there.
I thought I had read somewhere that we will be learning more about Lily and James' backgrounds, but maybe I was wrong. Hopefully we will in book 7. I agree that the whole eye thing might have significance.
Goodness I want book 7 NOW!!!!! Hahaha.