trillianjedi - 11:45 am on May 18, 2007 (gmt 0) [redherring.com...]
ComScore and Nielsen/NetRatings on Thursday buckled to advertisers demands that auditors be allowed to review the way the web site-ranking companies come up with Internet metrics. The agreement to undergo a more complete audit addresses one area of complaint from the advertising groups, but still left vague is a basic philosophical difference in audience measurement outlined in the IAB’s letter. In it the IAB stated that it favors a “census method of trying to count every single visitor. comScore and Nielsen, meanwhile, prefer a panel method, based on a representative sampling of participants.