The Error Game

Nobody is perfect.
If they were, there'd be no worthwhile stories.
So I built this acknowledgment into Rounding Error Press, and I'm inviting you to participate.
Be the first to catch me in a specific typo, and I'll send you a bookmark.
Catch me in an unintended grammar violation, and I'll mention you in the Acknowledgment section of the next book.
And be the first to find an internal plot hole? Pick a book out of the Catalog, Gratis.
Considering my essential tremor, it's easy pickings.