Aberforth
Ok, so I've searched but didn't find a thread devoted only to Aberforth theories. I'm curious to know what everyone thinks. How important will he be, what role will he play, was he close to Albus etc.
To start off I came across this passage in OotP that I never gave much thought to and would like to know if anyone thinks it's significant. It's in chapter 17 when Sirius is telling the trio that the the witch under the veil in the Hog's Head was actually Mundungus who overheard them. Sirius says Mundungus was "banned from the Hog's Head twenty years ago, and that barman's got a long memory."
So Aberforth has a long memory, this may come in handy in the last book!
What does everyone think?