FediForum Demo: Flohmarkt: federated decentralized classified ad software using ActivityPub

We are showing how you can use other fedi platforms (e.g. Mastodon) to interact with small ads and talk to the seller via direct messages. Speed demo by Philip Patsch, Decent Software (@Profpatsch@mastodon.xyz) at FediForum April 2026. More info: https://fediforum.org/2026-04