PC122 is PotterCast 122, an interview of J K Rowling with The Leaky Cauldron, which took place on 19 October 2007.
Three important revelations arising from the interview were:
- The Sorting Hat initially wanted to sort Neville Longbottom into Hufflepuff House.
- Helga Hufflepuff offered house-elves a refuge at Hogwarts, although the conditions at the school were also slave-like, albeit kinder than elsewhere in the wizarding world.
- Due to Lord Voldemort’s lack of intent at the moment of creation, Harry Potter was not technically a “real” Horcrux.