She's picking 3 winners - the first prize winner gets 5 books, second prize gets three and the third prize gets 2 books.
As part of the contest, Steph asks us to think of ways that they support or plan to support teen literature in the present and future.
Here are the books:
The Perks of Being a Wallflower by Stephen Chbosky
The Earth, My Butt, and Other Big Round Things by Carolyn Mackler
Flipped by Wendelin van Draanen
Stargirl by Jerry Spinelli
Saving Francesca by Melinda Marchetta
The Hero and the Crown by Robin McKinley
Sloppy Firsts by Megan McCafferty
Jessica's Guide to Dating on the Dark Side by Beth Fantaskey
If I Stay by Gayle Forman
Bad Girls Don't Die by Katie Alexander
Faerie Rebels: Spell Hunter by R.J. Anderson
Do check out Steph Su Reads for more details on this great giveaway which ends on May 13, 2009.