Market Share by Top Websites

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

2 Despite its recent growth, AdAction is still behind Mediaplex in all market share segments.

Websites Categories

1 Mediaplex has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Business & Industry, Shopping and 209 other categories.

2 AdAction is leading in Social Sciences, Miniatures, Catering and Camps.


1 Mediaplex is leading in most countries, including United States, United Kingdom, Germany, France and 126 other countries.

2 AdAction is leading in Sweden, Norway, Denmark, Moldova and one other country.