Eats, Shoots and Leaves

Here's an excerpt from the book, "Eats, Shoots and Leaves" by Lynne Truss:
"Getting your itses mixed up is the greatest solecism in the world of punctuation. No matter that you have a PhD and have read all of Henry James twice. If you still persist in writing, "Good food at it's best", you deserve to be struck by lightening, hacked up on the spot and buried in an unmarked grave."
(hence the subtitle of the book "A Zero Tolerance Approach to Punctuation")

If you'd like to test your own punctuation abilities, you can play the Punctuation Game by clicking here. See if you're a stickler like Lynne. Good luck!