Nielsen//Netratings Launches Internet Advertising Index; New Index Tracks Internet Advertising Trends

Business Wire, July 19, 1999

About the Nielsen//NetRatings Home Internet Advertising Index

The Nielsen//NetRatings Home Internet Advertising Index is based on data from approximately 15,000 panelists as they surf the web. The reporting threshold for the advertising Index is 40 respondents during the reporting period, which means that only ads delivered to 40 or more people during the reporting period are counted as part of the total. This minimum is consistent with industry guidelines for Internet reporting. The Nielsen//NetRatings panel is the largest media research sample of at-home Internet users currently being measured in real time. Nielsen//NetRatings uses unique technology capable of measuring both Internet use and advertising to provide the most timely, accurate and comprehensive Internet usage data and advertising information in the industry. More information about Nielsen//NetRatings Services is available at http://www.nielsen-netratings.com.

About NetRatings, Inc.

NetRatings, Inc., the premiere Web audience measurement and market research firm, provides media planners, site publishers, advertisers, e-commerce companies and the Internet investment community with daily, weekly and monthly data on online user behavior. The company offers unique topical and in-depth trend analysis of emerging sectors and companies. NetRatings' technology has the unique capability of tracking the entire spectrum of user site activity, including audience exposure and response to advertising banners. NetRatings, in partnership with Nielsen Media Research, offers Nielsen//NetRatings Services.

About Nielsen Media Research

Nielsen Media Research (NYSE:NMR) is the leading provider of television audience measurement and related services in the United States and Canada. Its services provide audience estimates for all national program sources, including broadcast networks, cable networks, Spanish language television, and national syndicators. Local ratings services estimate audiences for each of the 210 television markets in the U.S., including electronic metered service in 46 markets. Nielsen Media Research provides competitive advertising intelligence information through Nielsen Monitor-Plus, and Internet usage and advertising information through Nielsen//NetRatings. Additional information is available at http://www.nielsenmedia.com.