Conversant Ad Server
1,850 websites

Conversant Ad Server costs money

http://www.conversantmedia.com/mediaplex/

The Conversant Ad Server helps advertisers deliver across channels, with a dedicated team and full-service support.

VS

Yahoo Overture
1,768 websites

Yahoo Overture offers both free and paid options

http://www.admarketplace.com/

Yahoo! Search Marketing is a keyword-based Pay per click or Sponsored search Internet advertising service provided by Yahoo!

Market Share by Top Websites

1 Yahoo Overture is leading in Top 10K Sites and Top 100K Sites.

2 Conversant Ad Server is leading in Top 1M Sites.

Websites Categories

1 Conversant Ad Server has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Games, Science & Education and 11 other categories.

2 Yahoo Overture is leading in Food & Drink, News & Media, Business & Consumer Services, Gambling and 3 other categories.

Geography

1 Conversant Ad Server is leading in most countries, including United States, United Kingdom, France, Italy and 64 other countries.

2 Yahoo Overture is leading in Japan, South Korea, Philippines, Taiwan and 18 other countries.