A brief roundup of HP book 6 commentary.
Because I know 
kakiphony was looking for some, and I'm too lazy to go through my memories categories -- hey, look, a little post-HBP theorizing of the more coherent and logical kind!
copperbadge posits some interesting things about Snape.
riibu's ideas about Snape's interaction with Lily Potter, in light of Slughorn's constant references to her, are interesting.
pharnabazus has more on the same.
rj_anderson has theories on Horcruxes.
maggiesox has an interesting theory on Horcruxes, Founder relics, wands, and the tarot too.
stardustmajick made an in-depth post about the Ravenclaw artifact and why Ollivander may have disappeared over on 
spoil_me_hbp.
oulangi has some more thoughts on Horcruxes, a possible polar opposite to a Horcrux, and Snape/Lily.
I may update this post later, as I come across more stuff.
kakiphony was looking for some, and I'm too lazy to go through my memories categories -- hey, look, a little post-HBP theorizing of the more coherent and logical kind!copperbadge posits some interesting things about Snape.riibu's ideas about Snape's interaction with Lily Potter, in light of Slughorn's constant references to her, are interesting. pharnabazus has more on the same. rj_anderson has theories on Horcruxes.maggiesox has an interesting theory on Horcruxes, Founder relics, wands, and the tarot too.stardustmajick made an in-depth post about the Ravenclaw artifact and why Ollivander may have disappeared over on spoil_me_hbp.oulangi has some more thoughts on Horcruxes, a possible polar opposite to a Horcrux, and Snape/Lily.I may update this post later, as I come across more stuff.