When cell phones get banned at school, people find other ways to communicate with each other, sometimes with unforeseen consequences. The lives of four friends will be changed forever after the "post it war", with one withdrawing from the group, one withdrawing from school, and a new person coming in to take up the slack.

To be honest though, I'm not sure what the point of this story was, nor do I think the kids really learned much beyond the fact that words have consequences and just because you can, doesn't necessarily mean you should. Which isn't a bad lesson to learn - one of the things about free speech is that you should take responsibility for your words.
The lesson is kind of diffuse and I don't think the narrator, Frost (Eric), was the best pick for the author. The nicknames are annoying, to be honest, but this is middle school, so ...

Musings:
Middle school, it seems, is a dangerous place these days. And I thought high school was bad.
When did the word "tribe" replace "clique"? Both mean, functionally, the same thing in this book: a group of people you hang out with and share a common interest (though clique does have some major negative connotations and has for a long time.) ( )

Fantastic Read! ( )

For all the kids who loved [b:Wonder|11387515|Wonder|R.J. Palacio|https://images.gr-assets.com/books/1309285027s/11387515.jpg|16319487], this is Wonder with a lot more meat on its bones. I think this is the best bullying novel I've ever read. I wish it were a little shorter, because it's a perfect all-school read but I worry it'll intimidate some kids. My first 6th grade reviewer said it took her awhile to get into it (also a concern for all-school-reads), but by the end she was copying quotes down and asked to keep it so she could re-read it before she returned it to the library. ( )

Anderson vividly portrays each boy in Frost’s group, their intertwined relationships, and their individual responses to the changes that inevitably come. Initially not well understood by the narrator, Rose gradually comes into focus as an individual and an agent of inevitable change. This rewarding novel should resonate with many readers.— Carolyn Phelan

"Posted is about a boy named Eric. Eric doesn’t want drama and he wants everything to go be back to normal. But after what happened at Branton Middle school, it seems like nothing will ever go back to normal. After cell phones are banned at school, Frost and his friends try to use alternative ways to communicate like post it notes. They started leaving notes for each other on lockers and eventually this way of communicating caught on. But, people are getting distracted by the notes and most kids receive mean notes that were written just to hurt them. After a while, then everyone get out of hand and Frost and his friends are caught up in the middle of all of the drama. What will happen next? Will his friends stick together to help save each other? Read the book to find out!"