Background: once upon a time, when Amazon.com just went public, I said something like, "Why would anyone want to buy books on the internet? Half the fun of buying books is browsing a bookstore!" Another great moment in personal financial stupidity. Nevertheless, there's now a company that wants to emulate Netflix by renting books online, by subscription. Exactly what is the difference between this and a library? At least, for Amazon and Netflix, they are competing with for-profit businesses. Paperspine's competition is your local library, which likely also has an online catalog. Is it worth $10 a month or more to not have to pop by the library?