http://www.netratings.com/

Defining the global standard in Internet and digital media intelligence
NetRatings, Inc. (Nasdaq: NTRT) provides the industry’s global standard for Internet and digital media measurement and analysis, offering technology-driven Internet information solutions for media, advertising, ecommerce and financial companies which enable customers to make informed decisions regarding their Internet strategies.

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The services include the Nielsen//NetRatings Internet audience measurement service NetView, AdRelevance, the leading online ad measurement service, @Plan, the leading target-marketing platform for Internet media planning, buying and selling, WebRF, the industry’s first comprehensive media reach and frequency planning tool, and custom research and analysis. These services enable customers to make informed business-critical decisions regarding their Internet strategies.