The best stories of the week from across the web on e-books and self-publishing.

1. Why is an e-book ever riddled with typos? (The Verge)

2. Penguin Random House aims to attack digital, emerging e-books markets (paidContent)

3. E-readers grapple with a future on the shelf (Reuters)

4. E-books finally get traction in Japan (Business Week)

5. Barnes & Noble inks video deals in time for Nook HD, HD+ release (CNET)