They are local listings for buying used stuff that that you might have not even have known you want before browsing the listing.

That is not how I nor anyone I know uses our listings on Kijiji. I go to look for specific things i don’t want to buy new. I do not browse used stuff for sale. I’ve personally bought motorbikes 600km away because the search area has to be bigger for more niche items. I also set up the sale of a car to a guy 1800km away via kijiji.

I couldn’t do either of these using flohmarkt, so it isn’t really useful to me, federated or not.