Ad Butler is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Ad Butler has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, News & Media, Sports and 124 other categories.
MSN Ads is leading in People & Society, Computer & Electronics, Software, Technology News and 28 other categories.
Ad Butler is leading in most countries, including United States, United Kingdom, Canada, Belarus and 74 other countries.
MSN Ads is leading in Taiwan, Algeria, Sri Lanka, Georgia and 5 other countries.