How do you find new authors?

I have discovered that facebook is a great way to discover new authors. I cannot tell you how many I have added to my tbr pile. Alot of my favorite authors will have contests and recommend some new authors. I have found several that I will follow from now on like Laura Wright, Eloisa James, Linda Francis Lee, Shiloh Walker, Larissa Ione and many many others. So how do you find new authors to read word of mouth, just browsing online or recommendations from friends.