Experian Marketing Services is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Experian Marketing Services has better usage coverage in more websites categories. Including Autos & Vehicles, Arts & Entertainment, Car Buying, People & Society and 26 other categories.
Nextag ROI Optimizer is leading in Shopping, Business & Industry, Marketing & Advertising, Clothing and 11 other categories.
Experian Marketing Services is leading in most countries, including United States, United Kingdom, Japan, Italy and 16 other countries.
Nextag ROI Optimizer is leading in Germany, France, Australia, Austria and 3 other countries.