Harren Media is leading in Top 100K Sites and Top 1M Sites.
Harren Media has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, TV & Video, Movies and 38 other categories.
WebTrends Ads is leading in Business & Industry, Shopping, Law, Law & Government and 10 other categories.
Harren Media is leading in most countries, including Spain, Brazil, Mexico, Canada and 16 other countries.
WebTrends Ads is leading in United States, United Kingdom, China, Egypt and 11 other countries.