I briefly considered how to leverage activity pub to ideal create a gallery site where you could upload art then directly share it to your microblogging (ie mastodon) site but alas:
1 - I do not have the kind of free time to do that kind of project by myself
2 - Clearly activity pub has lost the “next cool place to hang out” race which is frustrating because I love it
Back to interlinked individual websites for now I guess!