If you are interested in YA books, then definitely check out these cool sites:

Pulse It is a site that lets teens read books online for free, review books, and get sneak peeks at upcoming books. You must be between 14-18 to join. Click here for more information and to set up an account http://www.simonandschuster.com/specials/pulseit/

Then, to watch interviews with authors (Laurie Halse Anderson, John Green, Lauren Myracle) check out Penguin's new YA Central Screening Roomsite. It seems like they'll be adding more content at the start of each season. http://us.penguingroup.com/static/pages/publishersoffice/screeningroom/0609/yacentral/episode1.html#vmix_media_id=4357509