Who is viewing your ad online? A basic question often left unanswered. Tracking impressions alone leaves out a critical element in gauging advertising effectiveness—audience delivery.

In August, women made up 56.1 percent of the Web traffic to music sites. Overall, music sites pulled in 42.5 million unique female visitors in August.

Web visitors using a mobile device increased 34 percent year-over-year, from 42.5 million mobile Web visitors in July 2008 to 56.9 million in July 2009 according to The Nielsen Company.

Working Moms are among the country’s highest spenders on cellular phone services, spending 21% more than the average cellular user on their wireless bills monthly.

Americans have nearly tripled the amount of time they spend at social networking and blog sites such as Facebook and MySpace from a year ago.

With a 70% jump in overall reach, the expansion of “All You Can Eat” packages, mobile video had its best year ever… still, challenges remain.

According to data released today by Nielsen’s new radio ratings service, which measures radio listening habits in 51 small and mid-level markets, 18-34 year olds in these markets listen to the radio 21.5 hours each week.

The Nielsen Company and Facebook today announced a multi-year strategic alliance to help marketers better use the Internet to develop and market new products. The first product of the collaboration, Nielsen BrandLift, is designed to give marketers a tool for…

Australia’s advertising sector appears to have avoided the worst of the ongoing shockwaves of the global financial crisis, although the impact on ad spending was significantly more severe across main media in the second half of the financial year…

Is football more popular than ever? If last weekend was an indication then it very well may be. FOX’s 4pm NFL telecast drew 25.1 million viewers, making it the most-watched opening Sunday NFL game since at least 1987.