Heather Mills' decision to engage the lawyers Mishcon de Reya in her bitter divorce from Macca is surely wise. And both should read the firm's website. For there they'll find a canny media guide for those stars being pursued by journalists. One piece of advice is never say "No comment" - it suggests there's something being hidden. So what did the McCartneys say back in May about divorce rumours - "We have absolutely no comment to make."