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 13 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 Angola, Zambia, Afghanistan, Namibia and 8 other countries.