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Waterstones drops its apostrophe

12 January 2012 Last updated at 15:57 GMT

The book seller Waterstones is to drop the apostrophe from its name. The company says the decision is to make the spelling "practical and versatile" in a digital world.

John Humphrys and Michael Rosen discussed on BBC Radio 4's World at One the implications of a decision which will inevitably upset traditional grammarians.