Scholastic Kids. It's filled with games, book guides, author information, contests and a forum to discuss books with other kids. There are tabs at the top for parents and teachers filled with great stuff too!
Another great site I happened upon targets those reluctant reader boys. It's written by author extraordinaire, Jon Scieszka. Head over to Guys Read for book recommendations and club news geared toward the fellas.
A site geared toward the teen reader, and with a slightly female slant, is Teen Reads. There are contests, reading guides, author interviews, book clubs and tons of stuff all about young adult literature. A really excellent site!
Though I don't know much about Sylvan's Book Adventure site, it looks very promising. There are also sections for parents and teachers as well as quizzes, prizes and teams for kids to join.
I think they're all worth checking out :-)
© 2007-2009 Cheryl Vanatti