Sydney is a middle schooler who is a voracious reader. She recommends the Amazon's Kindle because it cuts down on all the trips to the bookstore and library.
Alex is a home-schooled middle schooler who sometimes reads even when Mom doesn't make him. He writes these reviews, though, mostly because Mom makes him. And maybe, he can help out other folks out who struggle finding good stuff to read and fun games to play.
Mom enjoys reading, and keeping up with her kids' books definitely stretches her reading list. She writes reviews mainly to battle her forgetfulness (what was this book about again? did I like it?).