For the sake of correctness, it should be noted it did not say that when first posted, only "Enable showdead in your profile, find the post on /newest, and click [vouch] whenever it's flagged.". It was later changed into "Don't upvote it -- just "vouch" for it if you think it belongs.", and immediately after "Don't necessarily upvote it -- just "vouch" for it if you think it's on-topic.". The revision history is available on Mastodon by pressing the "Last Edited" hypertext.