@dym I would have thought payments would be handled completely separately.
I'm more thinking of sharing shop and item information between vendors, allowing for well populated categories of items to be searchable from anywhere in the fediverse.
@dregin No, it does make sense with ActivityPub. There’s already an advertisement/search system via #hashtags so you’d just have to generalize that to include price ranges, bids, and satisfaction ratings. And maybe other physical characteristics of specific products.
Actually #Amazon has to deliberately sabatoge such searches, or customers would always search for the best stuff at lowest price every time, so ActivityPub would be even better!