Audit Challenge History

October 22: Randall Rothenberg blogs, in response to a New York Times story, that "measurement discrepancies will be resolved."
Read the blog

September 28: IAB applauds as audience measurement firm comScore enters audit process and IAB supports Neilsen//NetRatings as it continues through its audit process.
Read more here

May 22: IAB issues a Press Release summarizing detailed outcome of Audience Measurement Summit 
 Read the press release

May 16: Audience Measurement Summit held at IAB.
Nielsen//NetRatings announces it will move forward to accreditation
 Read the press release

May 9: The AAAA, ANA, and ARF, lend their support to the IAB’s open letter.
 Read the joint press release issued by the AAAA, ANA and ARF (.pdf 50kb)

April 20: The IAB Issues an Open Letter to comScore and Nielsen/Netratings (NNR)
 Read the IAB Open Letter and Press Release