Zombiepalooza and on message boards. Speaking of zombies, if you are into them you should read her book Hollowland. She's not just a successful Indie author, she sold 100,000 books last month--in one month. Okay, I'm exaggerating a little, she only sold 99,000.
But, before you quit your day job to start self-publishing kidlit, there's a couple things you should know. First, most of her readers aren't kids, they are adults who read YA, paranormal romance specifically. Second, she's very talented. And third, she's gotten a little lucky, she would have found success no matter what, but she's had great fan support and even greater timing.
This level of sales can't be ignored and the Huffington Post ran an interview with her today. Even, if you aren't considering going Indie, it's worth checking out. And if you are considering it then consider this, she still has an agent.