Market Share by Top Websites

1 Nielsen NetRatings is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Act-On is clearly lagging behind, losing to Nielsen NetRatings in all segments.

Websites Categories

1 Nielsen NetRatings has better usage coverage in more websites categories. Including Business & Industry, Marketing & Advertising, Arts & Entertainment, People & Society and 209 other categories.

2 Act-On is leading in Business Services, Insurance, Computer Hardware, Consumer Electronics and 12 other categories.

Geography

1 Nielsen NetRatings is leading in most countries, including Italy, United States, Australia, Spain and 160 other countries.

2 Act-On is leading in Trinidad and Tobago, Papua New Guinea, Angola, Belize and 5 other countries.