I just realized the Swedish slang for flea market would work a charm. Loppis. It even sounds like a hip app. Someone quick make it an open fedi platform before the capitalists take it!
Edit: It's short for loppmarknad. Loppa = flea. Marknad = market.
I don't know how, but i kinda imagined it even though i don't speak a word of German (nor i am an English native speaker). It just... uh, sounds like it.
I don't think the "decentralize and federate everything" strategy is a good idea when it comes to online marketplaces.
We've seen how quickly bad actors can wreak havoc on the Fediverse like that one time when Lemmy Shitpost was closed for weeks due to people creating new instances of their own and spamming the community with CSAM. Imagine how much you open the community up to scams or criminal activity when money gets involved.
It will probably split and congregate around instances focusing on heavy moderation and KYC vs crypto-focused free-for-all ones if they ever gain traction.
All that is needed is a way to find what you want and a solid system of building trusted profiles with ratings and such.
Wouldn't the second part require a trusted means to verify that a given profile actually sold you the promised thing, as well as some trusted means (two-party signing, maybe) to announce that a payment actually took place?
Yeah, I'm aware. I think the Nostr space in particular is doing a really great job, and has some good ideas on how to make it work.
Why this development is significant, though, is that it's happening in ActivityPub space. It's not as robust, and doesn't have all the answers. But, the existence of such a project means that people within the space are already thinking about how to make this concept viable for the Fediverse.