@tchambers Not sure how relevant an activity oriented protocol like #ActivityPub would be for e-commerce sites.

Real time broadcasting through #WebSub + semantic markup like #hProduct / #relPayment = distributed storefront, then ActivityPub to share your purchases?

I also think schema.org already has semantics for this that eg Google digest for its e-commerce search?

@tchambers Federated store front would be doable, federated payment would be harder (though possibly doable as well)

There has been some work on #hProduct in the #indieweb / #microformat space, which may be reusable: http://microformats.org/wiki/h-product

And also #relPayment: https://indieweb.org/payment