I actually never knew this about libraries. We have a chance to change how they get books.
Libraries have limited resources and staffing to cull through anything but what the major publishers bring to them (let's face it, it saves them time). But self-publishing and indie authors are starting to yield some significant hits, and helping libraries surface those is a huge service.
I'm a big fan of this Kickstarter, which creates a program to do just that with the flagship Santa Clara County Library system and hopefully every library in the U.S. after that.