Market Share by Top Websites

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

2 In terms of market share, Mediaplex is clearly lagging behind, losing to Nielsen Display Ads in all segments.

Websites Categories

1 Mediaplex has better usage coverage in more websites categories. Including People & Society, Shopping, News & Media, Computer & Electronics and 117 other categories.

2 Nielsen Display Ads is leading in Arts & Entertainment, Business & Industry, Internet & Telecom, Autos & Vehicles and 102 other categories.

Geography

1 Nielsen Display Ads is leading in most countries, including France, United States, United Kingdom, Spain and 144 other countries.

2 Mediaplex is leading in Australia, Japan, China, Bangladesh and 17 other countries.