Internet Public Library– -great source for all kinds of information.
One Look–Dictionary search engine.
Earth 911–Just about everything you need to know to “go green” at home and at school.
Cool Math
“An amusement park of math designed for fun!”
Girls Go Tech
Fun, informative web site for teen girls interested in science, math, cool games or looking ahead into tech careers. Developed by the Girl Scouts of the United States of America.
Guys Read
Find books that guys like to read.
Teen Ink
Teen Ink magazine offers some of the most thoughtful and creative work on a variety of subjects, generated by teens for teens.
No Flying No Tights 
A Graphic Novel Review website.
Teen Reads (From Epicreads.com)
Book reviews for YA novels.
Foreword Reviews
Find comics, graphic novels, and manga to read.  News, reviews, interviews with writers and artists, and behind-the-scenes peeks at the creative process.
TruthOrFiction.com
“Get the truth about rumors, inspirational stories, virus warnings, hoaxes, scams, humorous tales, pleas for help, urban legends, prayer requests, calls to action, and other forwarded emails.” Check out eRumors, viruses, Internet hoaxes and more.
YALSA
Top reads for teens voted on by teens. Author interviews, book lists and awards
The Internet Movie Database–This enormous database stores information about movies, characters, actors and TV shows.  Find out what films your favorite stars have played in, discover little-known trivia and find links to official movie sites.