How do you discover new authors/books?

It is a scary time for the writing industry. With big publishing houses cutting back and bookstore giants going under left and right, the times they are a changing. There is an issue that many literary types are contemplating now. If bookstores are defunct how will readers learn about new books and new authors? Imagine it, you're perusing the book store for your favorite author and next to their book a cover catches your eye. Something about the title or the cover art and you can’t help but pick it up and read the back cover, and before you know it your arms are stacked with books you didn’t come for but left with anyway. Or sometimes you might head to specialty displays and best seller sections. Bookstores know what to sell and how to sell it, they will take your favorite author and group him with like authors all to sell more books to you.
If bookstores go away who will do this? So I am posing the question how do we the younger generation find new literature? What will new authors do to get their work noticed if there are no more readings and their work isn’t carefully marketed by these bookstores? What will we do when we can no longer walk down the aisles of our favorite Boarders and have our interest peeked?