DeEvening Links: Watergate Exxon gas prices Sucker! (GARY CAMERON - REUTERS) The Post's John Kelly gets the most expansive answer to date about one of the city's most pressing questions: Why is the price of gas at the Watergate Exxon so high? The answer involves a business dispute between gas magnate Joe Mamo and station operator Roland Joun, who are "locked in a mortal struggle," Kelly reports. It comes down to this: The more gas Joun sells, the more money he loses. "The only way I can recoup our rate is to sell less volume and make more money," Joun explains. New streetcar contract should ensure system gets rolling by 2013 (DCist, WTOP, WBJ) Abandoned infant's hypothermia death ruled a homicide (Crime Scene) No movement yet on ethics board nominees (Examiner) Twenty-four-seven dining dreams dashed (Young & Hungry) Kwame Brown is going shooting (DCist)