We all like to pretend we're not punctuation Nazis or whatever you call them. Tres relaxed about other people's misplaced apostrophes and the rest. But this? This is just plain wrong.

Finding something funny scrawled in magic marker on a greengrocer's market stall is one thing. Or even on a flip-chart outside a mobile phone shop - Managers Special - is a classic.

But to spend oodles of your marketing budget on a full-colour full-page ad and not having the wit to check it?