AdAction is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
AdAction has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Marketing & Advertising, Internet & Telecom and 73 other categories.
Shopzilla is leading in Shopping, People & Society, Clothing, Consumer Electronics and 70 other categories.
AdAction is leading in most countries, including Norway, Sweden, Netherlands, Denmark and 35 other countries.
Shopzilla is leading in United States, Russia, India, Canada and 14 other countries.