Bookbub is a service that sends you notices about sales on eBooks for multiple platforms. I've just signed up for this, but about once a day I get an email about eBooks that are either discounted or in some case entirely free. It takes about five minutes to sign-up for and for people who read voraciously like myself it's a great service. I wonder if there are more services like this out there. Does anyone know anything similar to this?
