(Reuters) – Consumer review website Yelp Inc posted a 72 percent rise in quarterly revenue, helped by strength in its mobile advertising businesses and the addition of more customers. Yelp’s shares rose about 5 percent in extended trading. The company’s net loss narrowed to $2.1 million, or 3 cents per share, in the fourth quarter, from $5.3 million, or 8 cents per share, a year earlier. Revenue rose to $70.7 million from $41.2 million. (Reporting by Chandni Doulatramani & Lehar Maan in Bangalore; Editing by Don Sebastian)