Interpolls is leading in Top 10K Sites and Top 100K Sites.
Interpolls has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, News & Media, Adult and 22 other categories.
WebTrends Ads is leading in Business & Industry, Shopping, Religion & Spirituality, Law and 14 other categories.
WebTrends Ads is leading in most countries, including United States, Indonesia, Canada, United Kingdom and 21 other countries.
Interpolls is leading in Japan, Brazil, Spain, India and 7 other countries.