This guide comes from an article published by someone in Toestand's forum which seems to be unavailable now.
Link to a page describing what it is instead.
In most cases we should try not to post "shortened" links, and be wary of clicking on obfuscated links in general.
Protip: checking them before you click is a good idea anyway: $ curl https://unshorten.me/s/{goo.gl/yzLPTN}
It’s courteous to non-Google fans to link to invidio.us or other instead of youtube:
https://invidio.us/watch?v={video_id}
http://axqzx4s6s54s32yentfqojs3x5i7faxza6xo3ehd4bzzsg2ii4fv2iid.onion/watch?v={video_id}
Alternate servers: instances.invidio.us
For Twitter content consider using nitter.net instead; just replace “twitter.com” with “nitter.net” in the URL
Please try to remove tracking parameters from the end of querystrings, e.g. utm_source=GCHQ
Bonus points if you avoid linking to sites with aggressive profiling if the intent is read-only. For example, linking to a Google doc if the viewer is not going to /edit (readonly) - a better choice is to link to a pastebin site instead. Also for sites behind paywalls, try using archive.is to show an archived version
Feel free to offer onion links as alternatives in your post, some small number of people may click on those instead. DDG, NYT, Invidio.us, etc. - all mirror their sites on .onion domains