I made a diagram to help you understand how the different timelines/columns work:

https://techn.ical.ist/assets/help.svg https://techn.ical.ist/media/zhoMEHOzhT2r6zlz034

@vhf thanks. It hasn't been easy trying to explain to anyone how toots make they way around. Even with 500 characters :rofl:
@vhf Nice. A related feature: profiles which don't generate sufficient interest to be followed ... only "pollute" their local Instance. The concept of distance or reach of a given profile or post might be useful to consider as a microblogging service scales. You don't /want/ absolutely /everything/ to appear /everywhere/.
@vhf I thought u got all toots from instances that any user in ur own instance follows a user in? If that makes sense ...
@abekonge Makes sense but that's not the case. It would make everything blow up. :)
@vhf so if you have a single user instance your federated feed is identical to your home feed?
@vhf this isn't quite complete in a way I haven't figured out yet. For example, I can see your toot on my (single user) server's federated timeline even though I don't follow you.
@vhf I definitely don't receive all toots from all users on all servers that I'm federated with though!
@pete Do you follow someone who fav'd or boosted my toot?
@vhf Is there a way for me to determine that? I can just see the counts on the toot permalink.
@pete @vhf I boosted it, if you follow this account
@djsundog @vhf I don't. I follow a bunch of people though, so if like/boost from a follower is a trigger as well that would explain it.
@vhf It's a tad more complicated than that because you also get toots that anyone you follow to *replies* to, and also booted toots. But that diagram is great.
@chris @vhf thanks for clarifying this. I couldn't quite figure out why some toots were sliding into my single-user TL
@vhf hmmm.. thought that the federated timeline would show all the public toots from all the nodes supporting federation
@vhf Just one thing I want to add: "toot" can also mean "boost" in the diagram.
@vhf Could I use your diagram for a tweet ? ;)
@Mandragora Bien sûr, profite ! Le SVG et le png, tout ce que tu veux, tu peux y aller.
@vhf Merci ;) tu aurais un compte twitter pour te mettre en source ?
@vhf what about a toot sent in "unlisted" mode? Can't figure out who actually sees it, and on which timeline.
@vhf Voilà comment ça marche sur #mastodon. Si vous suivez quelqu'un, ses "toots" (ou "pouets") apparaissent dans "Accueil", dans le cas contraire, si cette personne est inscrite sur la même instance qu vous, son toot apparaît dans le "Fil public local". Si elle est inscrite sur une autre instance, ses pouets apparaîtront dans le "fil public global" si et seulement si quelqu'un de votre instance suit cette personne.
@charly Exactement, oui. Je peux faire une VF du diagramme si ça aide.
@vhf Ah ouais ! ça serait super. :)
@charly Me faudrait juste les traductions des termes gens "Local timeline".

@vhf

"Local timeline" -> "Fil public local"
"Federated timeline" -> "Fil public global"

@vhf I see a graph about alternative timelines but no reference to Rick and Morty. Am confuse.
@vhf
This. I wanted this graphic yesterday. Makes so much more sense now. Thank You!
@vhf A step is missing:
...
< Does someone of my instance follow Foo ?>
-false->
< Did someone I follow faved or answered to Foo's toot? >
-true-> (Show in FTL)
-false-> (didn't reach instance)
@vhf I follow someone on my instance and I don't see their toots anymore. I broke it :/
@vhf great diagram. You should add the followbots, though. Ok, technically they are "anybody from my instance" but it might be good for understanding