Having the source post in a separate field seems like a really good idea, and it never crossed my mind before, so thanks! It would be enough work that I'd probably write some script to do it instead of doing it by hand, but it might be worth it to me to do so at some point.
You can do it by exporting the deck to csv, then using a emacs macro to automate the transition.
Followup to: Spaced Repetition Database for Mysterious Answers to Mysterious Questions
I've updated my Anki database for the Less Wrong Sequences to include cards from A Human's Guide to Words. I've been trying to put less information on each card, and I relied on cloze deletion more for the newer ones. Feedback is much appreciated. You can download them by opening up Anki, going to Download > Shared Deck and searching for Less Wrong Sequences.
I probably erred on the side of making way too many cards, but it seemed really important to me to internalize this stuff, since I think it has quite a lot of practical value. I can tell learning this deck has improved the quality of my thinking and my conversations with people because I'm better at noticing when I'm making one of the 37 mistakes and changing my course. I hope other people find it useful too!