DataHoarders

What means something to YOU? If you're truly limited on space, save that how to post you keep needing to visit, those favorite memes and templates, and those favorite GIFS and videos, and the comment threads that you feel like can't be left to a void. Don't worry, it'll all get scraped by wayback and others plus people that do have the storage to spare. Get what means something to you.

If you are personally trying to archive Reddit. That is really up to you. I can't tell you what would be important to you. For me i would focus on many of the technical subs. Like r/homeassistant r/jellyfin, r/selfhosted r/homelab etc... They often have technical support issues or setup guides that are very useful and only documented of Reddit.

If you are talking about what should we as a community should focus on I would recommend running and Archive Team Warrior.

The archive team will figure out what they want to download and it will do everything for you. It will eventually get uploaded to archive.org. and require zero space on your part. Only a somewhat good internet connection is required.

https://wiki.archiveteam.org/index.php/ArchiveTeam_Warrior