OH MY SHIT. THEY'RE ADDING WRITABLE BOOKS IN THE NEXT UPDATE.
Do you realise how useful this will be? This will provide so much possibility to lore and rp! people can even take up the job as an author or maybe even a journalist! Libraries can now be legit! Suba's shop will make sense! I have wanted this ever since multiplayer was implemented! I am so happy
Each book holds up to 50 pages and is pretty damn cheap to make.
all you need is a book, an ink sac, and a feather. There is no direct crafting recipe you just throw it in the crafting bench and done!
http://www.minecraftwiki.net/wiki/Book_and_Quill