It's too much text to rely on centralized hosting for, plus images etc Posting torrents of all the files is easier to do with archives of these libraries, instead of converting every book to a new format

Eg these classics are all perfect in markdown

GitHub

GitHub - mlschmitt/classic-books-markdown: A collection of classic books presented in markdown format

A collection of classic books presented in markdown format - mlschmitt/classic-books-markdown

turning one of those into a NIP-23 works perfectly, and they can be read in any client

if the goal is to store material conveniently (as a whole) and broadcast widely, a binary blob of verifiable packets would do much better than a garbeled mess of text attached to a signature to check against. for example, a relay would have to send the whole note before a book could ever render, whereas some pdfs can load a partial book and resume half-way through downloading. sending an ebook through nip23 would be like sending an mp3 on FM radio. kinda going backwards here even though it's all "just text" nip23 is great for blogging i still think its cool that you want to bring markdown books onto nostr though