In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to WordStream in all segments.
WordStream has better usage coverage in more websites categories. Including Business & Industry, People & Society, Relationships & Dating, Autos & Vehicles and 50 other categories.
Nextag ROI Optimizer is leading in Shopping, Home & Garden, Marketing & Advertising, Clothing and 7 other categories.
WordStream is leading in most countries, including United States, United Kingdom, Canada, Mexico and 12 other countries.
Nextag ROI Optimizer is leading in France, Germany, Japan, Austria and 3 other countries.