[edwintorok]

Sometimes the pages can still be found on archive.org, archive.is, etc. but I usually find out too late that a page I bookmarked wasn't actually archived. I've just found this Firefox plugin [1] that automatically sends your bookmarks to archiving sites. (one at a time, so unfortunately this won't immediately help with existing bookmarks, unless you visit them all again).

[1] https://addons.mozilla.org/en-US/firefox/addon/archiveror/

[alltakendamned]

I wrote a little script that I run as a daily cron job which fetches all URLs I bookmarked/saved in Pocket and submits it to archive.org.

I wish more people would do that as link rot is a very real thing, certainly for technical information often saved in gists or github repos that are often harder to find back.