TeenReads is a wonderful site for books for teens.
It's focused on the newest and latest Young Adult books with reviews and author interviews.
There are lots of contests and giveaways on TeenReads.
What I like the most is their 'Ultimate Reading List', which includes over 300 titles of a good combination of classics, nonfiction, young adult books and modern fiction, which you can read from during the summer holidays. The list is regularly updated with the latest, best titles.
Also, at TeenReads you can know which books have been made into movies and keep up with the latest.