Anna's is full of copyrighted material. We're working on mass-importing directly from open-access archives, like Project Gutenberg or the Harvard dump, instead. Anna's also uses those archives, as it's just an archive search engine (it doesn't actually store those books), but they include Pirate Bay in the search results, and we're not going to put those items on our project's relay.

Does your app only publish to that specific relay, or can any relay be used? Combined with a personal relay it would be a great tool for building a library for yourself, and the possibility of sharing it with the world.