Melanie Brown is reportedly doing her bit for charidee by "posing naked for a campaigning against sex trafficking" for the Helen Bamber Foundation. Well, it has to be said, there's be no greater sex deterrent than the prospect of encountering an image of Scary Spice starkers. Also flying the flag for celebrity do-gooders this week is Scarlett Johansson. There's been a fair few column inches devoted to her proffering herself as a date on eBay in aid of Oxfam. Seemingly sending the highest bidder and a friend in a limo to her new film He's Just Not That Into You constitutes a date. Oh, apologies, I forgot to mention "The actress will give her date a hand-written note after the screening." She'll probably have it fashioned into some kind of paper plane to propel from a moving vehicle.