advise to save content before removal

Author: xaur

moderation.md

@@ -20,6 +20,12 @@ Spam may get removed and trigger a ban without warning.
 ### For moderators
 
 - as early in the unproductive interaction as possible, give a clear warning before the ban to set proper expectations for all
+- when the removed content is not outright junk/spam but is instead heated and "controversial", try to save it before removal so that it is later possible to verify mod actions _and_ analyze behavior of bad actors
+  - on Reddit, snapshot the content via [archive.today](https://archive.today/) or [archive.org](https://web.archive.org/) before removal
+    - if it is in the blocked state, allow it temporarily, snapshot, and quickly remove again
+    - alternatively, snapshot it from the user's profile page where it is shown even when when it's blocked in the subreddit (this only works for comments)
+    - use old.reddit.com for snapshots since the new style hides most content when javascript is disabled
+  - on Matrix, save the conversation in a text file
 
 ### For Decred community members