* TheFaultInOurStars was #1 on the Amazon bestseller list months before it was even scheduled for release. This caused Penguin to push the publishing date up by 5 months, which doesn't happen very often.
** John Green promised to sign every single copy of the first publishing of TheFaultInOurStars. That was 150,000 books, and about 5,000 signatures per day. He did it.