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 69 other categories.
AdBuyer.com is leading in Shopping, Career & Education, Education, Car Buying and 24 other categories.
Vocus is leading in most countries, including United States, Canada, India, United Kingdom and 28 other countries.
AdBuyer.com is leading in Israel, Greece, Belarus, Cayman Islands and 9 other countries.