20,858 Public Domain Audio Books

Semi off topic, but i always thought it would be cool if there was a kind of multiplayer for ebooks - threads and notes in the margins similar to how dark souls lets you write brief hints for other players that you can hide around the game world.

Its impractical due to the technical and legal challenges, but it would be neat to see the thoughts of other readers page by page.

On kindles you can highlight passages and there's an option to see the most highlighted passages. Not quite the same as notes but a bit similar. I find it annoying and have it disabled however.