YALSA's Teens' Top Ten
The site lists the top ten teen choices of books for the current year and for previous years going back to 2003.
American Library Association's 100 Best Books for Teens
The site contains a list of 100 books that the 2000 Annual Conference of the Americxan Library Association considered the best teen books.

Awesome Library for Teens
Directory of links for teenagers and teachers organized by categories, including Games, Projects, English, Mathematics, Science, Leadership, Friends, and more.
Internet Public Library - For Teens
GovSpot - U.S. Government, State Government, Congress, government, jobs and more - The Internet's Best Reference Source
Virtual Reference Shelf
Merriam-Webster Online