Editor's note: This story has been corrected to note that NAR must grant its approval before Move would be allowed to display Realtor productivity statistics such as active listing counts and sold transactions on Realtor.com.Realtor.com operator Move Inc. and the National Association of Realtors have updated the 14-year-old agreement governing the operation of the Internet's most popular real estate portal with the goal of allowing more rapid innovation of the site. Formal negotiations over the 1996 Realtor.com operating agreement, which were initiated by Move in May and ultimately involved a mediator, led to a lengthy amendment that took effect Sept. 10 -- the first change to the agreement in more than 11 years. The amendment to the agreement gives Move more leeway to make chang...