ETA: There is now a third thread, so send new comments there.
Since the first thread has exceeded 500 comments, it seems time for a new one, with Eliezer's just-posted Chapter 33 & 34 to kick things off.
From previous post:
Spoiler Warning: this thread contains unrot13'd spoilers for Harry Potter and the Methods of Rationality up to the current chapter and for the original Harry Potter series. Please continue to use rot13 for spoilers to other works of fiction, or if you have insider knowledge of future chapters of Harry Potter and the Methods of Rationality.
A suggestion: mention at the top of your comment which chapter you're commenting on, or what chapter you're up to, so that people can understand the context of your comment even after more chapters have been posted. This can also help people avoid reading spoilers for a new chapter before they realize that there is a new chapter.
I told someone in advance; in particular, I told them there would be a completely wrong ship, they guessed Fred/George, I told them "not wrong enough", and then said "Sirius and Pettigrew". They said, "OH, THAT'S JUST WRONG". So I figured that, yes, that was justifiably describable as "completely wrong". Also, the fact that I googled obvious spellings of the ship and found that it only seemed to have been done once or twice (I forgot the exact number), in a fandom that has a convention for using "Snumbledore" to indicate Snape+Lupin+Dumbledore, seemed to suggest that it was pretty damned wrong.
Really? I'm surprised that that ship is that rare. It always struck me as one of the more plausible ones. This seems to reflect a general pattern that whatever makes ships common is not very correlated with their plausibility.