LinkedIn deserves an entire article to list their each and every dark pattern. Some of the few that come to my mind:

- Asking you to install app when browsing from mobile (which goes away when you use "Desktop Mode").

- Saying that you have a message in your inbox but not the very message itself.

BTW, Do we have an open source alternative to LinkedIn like there is Mastodon to Twitter? :(

Another teeth-biting favorite is Adobe's "free" online tools (like PDF pages splitter etc.) where you will be able to do everything and once you click "Download", Adobe asks you to create an account to continue. :/