The Post Office just delivers your mail, it doesn't do any curation. YouTube, TikTok, etc. differ by applying an algorithm to "decide" what to show you. Those

The Post Office just delivers your mail, it doesn't do any curation. YouTube, TikTok, etc. differ by applying an algorithm to "decide" what to show you. Those algorithms have all sorts of weights and measures, but they're ultimately personalized to you. And if they're making personalized recommendations that include "how to kill yourself"... I think we have a problem? It's simply not just a FIFO of content in content out, and in many cases (Facebook & Instagram especially) the user barely gets to a choice in what is shown in the feed... Contrast with e.g. Mastodon where there is no algorithm and it only shows you what you explicitly followed, and in the exact linear order it was posted. (Which is actually how Facebook used to be)