Experian Marketing Services is leading in Top 1M Sites.
Experian Marketing Services has better usage coverage in more websites categories. Including Business & Industry, Autos & Vehicles, Arts & Entertainment, Car Buying and 20 other categories.
Nextag ROI Optimizer is leading in Shopping, Home & Garden, Health, Clothing and 14 other categories.
Experian Marketing Services is leading in most countries, including United States, Brazil, Canada, New Zealand and 22 other countries.
Nextag ROI Optimizer is leading in France, Sweden, Australia and Hungary.