In terms of market share, Advertise.com is clearly lagging behind, losing to Kelkoo in all segments.
Advertise.com has better usage coverage in more websites categories. Including Health, Products & Shopping, Business & Industry, Arts & Entertainment and 35 other categories.
Kelkoo hasn't got a lead over Advertise.com in any websites category.
Kelkoo is leading in most countries, including Italy, Netherlands, Norway, Portugal and 5 other countries.
Advertise.com is leading in United States, Japan, Turkey, Brazil and 3 other countries.