Experian Marketing Services is leading in Top 100K Sites and Top 1M Sites.
Experian Marketing Services has better usage coverage in more websites categories. Including Autos & Vehicles, Arts & Entertainment, Business & Industry, Car Buying and 21 other categories.
Nextag ROI Optimizer is leading in Shopping, Health, Home & Garden, Industrial Goods & Services and 14 other categories.
Experian Marketing Services is leading in most countries, including United States, Canada, United Kingdom, Japan and 12 other countries.
Nextag ROI Optimizer is leading in France, Greece, Austria and Saudi Arabia.