Open Library (not activitypub compatible) is an ISBN database type service. But, it also has reading list/want to read/book review and rating features. So, my question is from a features standpoint and index standpoint (number of books indexed), which is better?
Mostly for the federated bits I assume. Being able to follow people’s bookwyrm accounts from your other socials is an interesting idea, though I don’t know how often it actually happens in practice. If that stuff doesn’t interest you then yeah just use OL directly ¯\_(ツ)_/¯