all of world4ch has been uploaded to archive.org here's a comprehensive list of all uploaded boards:

https://archive.org/details/prog-20140418.db
https://archive.org/details/lounge-20140420.db.xz
https://archive.org/details/sjis-20140420.db.xz
https://archive.org/details/lang-20140420.db.xz
https://archive.org/details/newnew-20140420.db.xz
https://archive.org/details/vip-20140420.db.xz
https://archive.org/details/anime-20140420.db.xz
https://archive.org/details/book-20140420.db.xz_788
https://archive.org/details/carcom-20140420.db.xz
https://archive.org/details/comp-20140420.db.xz
https://archive.org/details/food-20140420.db.xz
https://archive.org/details/games-20140420.db.xz
https://archive.org/details/img-20140420.db.xz
https://archive.org/details/music-20140420.db.xz
https://archive.org/details/newpol-20140420.db.xz
https://archive.org/details/sci-20140420.db.xz
https://archive.org/details/sports-20140420.db.xz
https://archive.org/details/tech-20140420.db.xz
https://archive.org/details/tele-20140420.db.xz

I might write a script for automatically downloading all of these, extracting them, and merging the databases together for a single world4ch db. It made me sad to see a lot of the other boards still had recent activity in them.