Apostrophes that matter and apostrophes that dontI'm always saying that, for persuasive writers, what's "correct" depends quite a bit on context: who is communicating with whom, and where and when the communication is taking place. And here's a good example.
I'm not too concerned about the missing apostrophe above, which appears outside the vet's surgery round the corner from where I live. (As long as he can put a geriatric hamster out of its misery, that's good enough for me.) The one below, on the other hand, bothers me quite a bit: the staff car park in question is at my daughter's school.