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 Despite its recent growth, Optimost is still behind Nielsen NetRatings in all market share segments.

Websites Categories

1 Nielsen NetRatings has better usage coverage in more websites categories. Including Business & Industry, Marketing & Advertising, Arts & Entertainment, Food & Drink and 221 other categories.

2 Optimost is leading in Insurance.

Geography

1 Nielsen NetRatings is leading in most countries, including Italy, United States, Australia, Spain and 174 other countries.

2 Optimost hasn't got a lead over Nielsen NetRatings in any country.