<p>Every Christmas, unwanted round robin letters, stuffed with news of young Chloe's nauseating excellence at - well - everything, the announcement of Janet's cousin's husband's friend's divorce, or the details of Terry's colonoscopy, accumulate on doormats. One day, Simon Hoggart decided to do something about it.<br><br><br>He mercilessly presented the most eye-popping examples of such letters in his bestseller, The...