By Andy WrightBy now, everyone has probably heard of the Yelp review heard 'round the world. Christopher Norberg took issue with the billing practices of one Steven Biegel, a chiropractor at the Advanced Chiropractic Center on Valencia Street. Like many disgruntled consumers, Norberg expressed his dissatisfaction on Yelp. Biegel retaliated with a lawsuit.What happens when you sue someone for writing a negative review on a review site? Users of the site start reviewing your lawsuit. Oh, dear.A vi