@thomasfuchs Hi Thomas, we totally understand your frustration and are working on producing some kind of directory for all federated Magazines (since there are 1,000 of them and that will grow in the future as we federate more profiles, it is a bit of an undertaking!). In the meantime, here's a list of all our federated publisher profiles and you should be able to navigate to their Magazines from there.
https://flipboard.social/@Flipboard/111704724791581709
In addition, our own editorial desks are federated and can be found at @thenewsdesk , @science, @tech, @theculturedesk.
Appreciate that this is totally non-intuitive and laborious, but hopefully you should be able to find some cool stuff to follow as we work on a better way of sharing the information.