In terms of market share, Advertise.com is clearly lagging behind, losing to Shopzilla in all segments.
Shopzilla has better usage coverage in more websites categories. Including Shopping, Arts & Entertainment, Computer & Electronics, Business & Industry and 48 other categories.
Advertise.com is leading in Search Engine, Universities & Colleges and Energy.
Shopzilla is leading in most countries, including United States, Canada, China, Russia and 18 other countries.
Advertise.com is leading in Brazil, Spain, Mexico and Iran.