Kids Reads http://www.kidsreads.com
Book Adventure http://www.bookadventure.com
Guys Read http://www.guysread.com
Planet Esme http://www.PlanetEsme.com
Scholastic Summer Reading http://www.scholastic.com/summerreading/index.html
Carol Hurst's Children's Literature Site http://www.carolhurst.com
International Reading Association (best books lists) http://www.reading.org/resources/tools/choices.html
Great Spelling and Vocabulary Practice http://spellingcity.com