Among other advantages from the merger, including various economies of scale, Tribune's newspapers could now effectively compete for national advertising, as it has grown to become the third largest newspaper group in the country. Tribune Media Net, the national advertising sales organization of Tribune Publishing, was established in 2000 to take advantage of the company's expanded scale and scope. By 2001, revenues had grown to $5.25 billion. However, Tribune needed to pay down some of the debt that it accrued through the Times Mirror purchase; as a result, Tribune moved to sell various non-newspaper holdings operated by Times Mirror. Flight information provider Jeppesen Sanderson was sold to Boeing for $1.5 billion in October 2000. Also in October, the Institute for International Research purchased AchieveGlobal, a consulting and training firm for $100 million. Times Mirror Magazines was sold to Time, Inc. in November of that year for $475 million. Tribune divested its Tribune Education division to The McGraw-Hill Companies for $686 million in September 2000. After all these sales, Tribune still had $4 billion in long-term debt. Tribune started a joint venture with Knight-Ridder, CareerBuilder, that same year.