If you've paged through a John Green book at one point in your life, there's a chance that you've gotten a magical communique from a stranger, telling you they believe in you and that the world is, in fact, an awesome place to live. Welcome to the world of Nerdfighter Notes.

Green himself, author of "The Fault In Our Stars," "Paper Towns" and more, answered a fan on Twitter this morning wondering what the heck was going on when she found one such insanely positive letter in her copy of Green's book "Looking For Alaska."

And, yes, we agree: THEY ARE AWESOME.

As it turns out, Nerdfighter Notes began as a coordinated effort from John Green fans to "spread the awesome a little." Fans of Green, who refer to themselves as Nerdfighters, decided that the world could use a heavy dose of awesomesauce and began hiding the ultra-positive notes in Green books in bookstores and libraries, hoping to bring something special to a stranger's day.

It's a really cool phenomenon, check it out.

This copy of "The Fault In Our Stars" has a love story and some love from a stranger inside.

Just a little reminder to be awesome.

"I've had #LookingforAlaska on my bookshelf for a few years now, and the other day I decided it was about time to read it. As I was flipping through the pages, I noticed this index card tucked away inside. Like I said, I've had this book for years, but I never noticed the note before. It made my day! #Nerdfighters are the best! #DFTBA #bookstagram"

Not the worst way to spend time.

"Got sorta bored so I decided to spend the night making my own nerd fighter notes,I haven't been into the vlogbrothers as long as others but I thought this was a really good and kind idea so,why not? (Forgive my handwriting)"

A shopping trip with a side of mischief. Margo Roth Spiegelman would be proud.

"So my friend and I left Nerdfighter Notes in Barnes and Nobles today"

Awesome books for awesome people.

"We are made of awesome."

"Something I found today.. "

Items bought and sold.

You might be a nerdfighter.

"Thanks to the nerdfighter who made my day."

Have you found any Nerdfighter Notes? Are you remembering to be awesome?