In a communiqué sent to clients today, Nielsen said the glitch primarily affected online audience estimates for its NetView service, and that the impact was "significantly less" on its VideoCensus service.
Nielsen said it has begun final testing of a "solution" that would increase the "incidence of very long URLs," and that it plans to make that change effective with its December audience measurement and that it would also apply it retroactively to the data it reports for November. "We are delaying the delivery of November data until the end of December to ensure these changes are incorporated in our next data release," Nielsen said in the client notice.