The New York Times Company, which has been shedding assets and focusing on its core newspaper and Web site, is preparing to sell another of its properties. The company has a letter of intent to sell the About Group, the unit that includes the About.com online resource guide, to Answers.com, a question-and-answer site, for $270 million, a person familiar with the deal said on Wednesday. It is not clear when the deal will close because financing has not yet been secured. When the Times Company originally purchased About.com in 2005 for just over $400 million, analysts questioned how compatible About.com...