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, Topsy 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, Arts & Entertainment, News & Media, Marketing & Advertising and 196 other categories.

2 Topsy is leading in Crafts, Alternative & Natural Medicine, Mental Health, Genealogy and 6 other categories.

Geography

1 Nielsen NetRatings is leading in most countries, including Italy, United States, Australia, Russia and 178 other countries.

2 Topsy is leading in Japan and Cocos Islands.