Pay attention: it's important!

She does say that people who put an apostrophe in the wrong place, when they ought to know better, deserve to be struck by lightning, hacked up on the spot and buried in an unmarked grave, but it’s probably mostly in fun. —Oliver Pritchett reviews Shoots and Leaves: The Zero Tolerance Approach to Punctuation, by Lynne Truss —Pay attention: it’s important!  (The Telegraph)