Definitely Feed by M.T. Anderson. It's told from the perspective of an adolescent living in a future where we have colonized other planets, and everybody has brain implants that basically fulfill the roles of Facebook, Amazon, Grooveshark, etc. Kids can even download viruses into their brains which get them high like drugs would.
The protagonist finds himself having to navigate a glamorous world of instant gratification where everybody talks in Youtube comments, and the unplugged "real world" of a poor but well-educated teacher's daughter that he likes. Published in 2002, it has a lot of spot-on predictions about the social role the internet is fulfilling. Simple language, but challenging themes. Should be required reading for all kids these days, but it's the kind of book a 14-year old would completely get into. The first sentence:
"We went to the moon to have fun, but the moon turned out to completely suck."
Feed by M.T. Anderson can prove otherwise. With knowledge closer than your fingertips, people would no longer care to learn. They would rather be entertained. Imagine Reddit and Wikipedia in your head. Would you rather read Wikipedia or Reddit? Reddit, because the knowledge is there permanently to be discovered, briefly played with, and put back in its place, never to be thought about again.
I just went and stared at my bookshelves and realized that there was a distinct paucity of minority characters.
However, some general recommendations:
feed for the teenager uninterested in the world at large or the dystopian fiction fan.
My Date with Satan Short stories, usually from a female perspective. High schoolers would probably delight in the bad language and messed up characters.
Trickster's Choice; A young adult girl-power fantasy/spy novel with a lot to say about colonialism. My strongest recommendation on this list. Lots of major minority characters also.
Infidel; A heavy-handed memoir about triumph by a woman who "escaped" Somalia and is now a European politician. Controversial for a multitude of reasons and has nothing nice to say about Islam, but you know your students better than I do.
The Immortal Life of Henrietta Lacks for the scientifically inclined.
Wicked for modern classic fans who'd appreciate deeper meanings.
Reality imitates fiction once again. I just finished reading Feed by M. T. Anderson.
http://www.amazon.com/gp/product/0763622591?ie=UTF8&force-full-site=1
Why do I feel this will turn in to what happens in this book.