The best way to post from Mastodon to Lemmy is like this:

Test post from Mastodon to Lemmy <- 1st line: automatically turned into a title

@Fediverse <- 2nd line: mentioning the Lemmy community

Writing this from Mastodon as a Test. Hello! <- Everything below: the post body

Lemmy automatically turns the first line/paragraph of a Mastodon toot into the title.

One nice thing about XMPP is that it can theoretically use transports to connect to everything and then some.

I have seen a Matrix/ActivityPub bridge in action, though.

There's using AI assistance for clean coding and following all the other guidelines of good software development otherwise.

And there's giving Claude Code a simple prompt to generate a ready-to-run application and uploading the result to GitHub as-is because you want to be a coder, but you don't know jack shit about coding or software development or licenses.

NOOOOOOOOOO WE MUST ALWAYS REPLACE $Product WITH "$Product BUT IT'S FEDERATED WITH MASTODON"!!!111

Also, Threads has introduced extremely strict rules for servers that want to federate.

Entire Fediverse server applications are incapable of following all these rules, either technologically or by concept.

For example, IIRC, Threads demanded a full public timeline. Hubzilla, (streams) and Forte do have that feature in code. But it's intentionally turned off server-wide by default, and there's a very good reason for this and for just about no serious admins of public servers ever turning it on.

Lemmy is all about groups. It doesn't have any way to connect to and interact with single users.

Mastodon, on the contrary, is all about single users following single users. It has no support for groups whatsoever. Mastodon users can follow Lemmy communities, yes. They can reply to posts, but in a very Mastodon way (automatic mentions, they'll probably insert hashtags etc.). Seeing (almost) the entire conversation is the default on Lemmy and extremely tedious and anything but straight-forward on Mastodon. And starting a new thread in a Lemmy community from Mastodon is difficult, nobody knows how to do it right, and whoever tries it will clash with Lemmy's culture.

Stuff like Friendica or Hubzilla is somewhat more general-purpose. It can do both. But I've yet to see a Lemmy user subscribe to a Friendica group or a Hubzilla forum (the opposite does work).

Or copy-paste GPL code, alter it and keep it closed.

And he wants to market it as his own, original, scratch-made, "nothing even close to this has ever only even been attempted before" creation.

And because almost nobody outside the Fediverse has ever heard about anything in the Fediverse, he'll succeed. To the point where people will laugh about Mastodon being a Haven Social rip-off because they've heard of Haven Social first and Mastodon later.

These odds are still extremely slim. Even if there was one Pillowfort user who has heard of Wafrn, that one voice wouldn't be loud enough to reach the whole crowd in time before they all move to something that's nothing like Tumblr or Pillowfort (e.g. Mastodon, Bluesky). And I don't think that there are that many more people on Pillowfort who have heard of Wafrn. Especially considering how few people on Mastodon, much less Lemmy, have heard of it.

Not likely enough, though.

I've watched Mastodon and its users for years now. From my experience, for more than 50% of all Mastodon users, the Fediverse equals Mastodon. That doesn't mean that they don't count Lemmy as part of the Fediverse. It rather means that they've literally never even heard about Lemmy. They haven't heard of any Fediverse software other than Mastodon.

There are lots of ATmosphere users who haven't even heard of Mastodon, much less the Fediverse.

Another example: I'm an active user of a virtual world system named OpenSimulator. It's extremely similar to Second Life, also because it uses the same viewers. It's free-as-in-license as well as free-as-in-free-beer and free-as-in-most-grids-don't-even-have-in-world-payment. It's open-source. It's decentralised to the point where your avatar can teleport to other grids (= worlds = server instances). And yet, the vast majority of OpenSim users have never heard of Mastodon either, much less the Fediverse.

I bet that next to nobody on Pillowfort has ever heard of the Fediverse, and that absolutely nobody has ever heard of anything else in the Fediverse than Mastodon.

FediDB seems to be opinionated as well. It seems like if Daniel doesn't like a server app, he won't add it. AFAIK, he has been notified about the existence of Forte, but he still hasn't added it.