Its versus It's. I can never remember which to use when. There's ample proof here on the blog, I'm sure. Maybe by bringing it into the open, I can change. It's: A contraction of "it is" or "it has". It's not too late to win The Mark on Goodreads.
Its: The possessive of it. The Book Resort is doing its own giveaway, through 12/31.
There. Done. Let's see if it works.