In terms of market share, AdBuyer.com is clearly lagging behind, losing to Vocus in all segments.
Vocus has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, News & Media and 68 other categories.
AdBuyer.com is leading in Career & Education, Shopping, Education, Jobs & Employment and 24 other categories.
Vocus is leading in most countries, including United States, Canada, India, United Kingdom and 23 other countries.
AdBuyer.com is leading in France, China, Germany, Netherlands and 11 other countries.