Fahrenheit 451 is a great book for all times and all ages, but while reading it I kept thinking of some modern good books.  If you'd like something written more recently and especially for young people, try these favorites:

Feed by K.A. Anderson is about a time in the future when everyone has a "feed" installed in the brain.  It sends out advertisements for products of personal interest as you pass the store.  Sounds like the convenience of some online sites today.  But what else does the feed do to its customers?  Scary, with a bit of romance.

The Last Book in the Universe  by W. R. Philbrick is about a kid who meets an strange old man who can actually read and write.  That survivor remembers when there were books, instead of mindprobes that  "drug" the poor into complacency. 

After  by Francine Prose is a creepy tale of what happens after a Columbine-like incident.  To prevent violence in one school, a new administrator initiates several measures to control kids, teachers and even parents.  They say its for protection, but then students begin to disappear!  If you've ever wondered about what's at the bottom of the slippery slope that starts with locker inspections and metal detectors, try this book.

Uglies by Scott Westerfield is the first in a trilogy of novels about where our  obsession with appearance and good times might take us.  In this future teenagers are considered uglies until they have the operation that makes them "pretties" filled with "pretty thoughts".  After that, parties are constant, and there are no worries.  Yet, the main character hears of a place where people remain "ugly" and know about books, art, and a time when what you thought mattered - and she is determined to - escape.

These are the books 451 brought to my mind.  What about you?