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 210 other categories.

2 Act-On is leading in Business Services, Insurance, Consumer Electronics, Addictions and 11 other categories.

Geography

1 Nielsen NetRatings is leading in most countries, including Italy, United States, Australia, Spain and 163 other countries.

2 Act-On is leading in Netherlands, Bahrain, Angola, Jamaica and 6 other countries.