Here is the collection of young adult book resource links.

B&N Kids Blog
Barnes & Noble offers a blog covering children's books. It contains information about picture books, chapter books, middle grade kids books and more.

Book Bag, The
A resource for teenage readers with book reviews, new releases and other features on books for teenagers

BookWorm
Resource for children's books. Contains book reviews, book features and information about children's book authors. Part of the Book Report network.

Children's Literature Web Guide
This resource website provides links to internet resources related to books for children and young adults.

Children's Writing at Writers Write
A resource about children's writing and books for kids from Writers Write.

eBay's Children's and Young Adult Books
eBay's very large collection of books for children and young adults.