Websites change. Perma Links don't.
Archiving
Perma.cc Blog
The critical window of shadow libraries
simon987/awesome-datahoarding: List of data-hoarding related tools
all-the-data/awesome-data-hoarding: How to save everything online. Tools for for scraping, saving, downloading, hoarding, archiving, etc.
Looks like Internet Archive lost the appeal? : r/DataHoarder
Archiving Data On Paper Using 2D Images
gremlin.neocities