AdTotal is leading in Top 10K Sites and Top 100K Sites.
Harren Media has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, TV & Video, Movies and 42 other categories.
AdTotal is leading in Pets, Pets & Animals, Basketball, Health and 2 other categories.
Harren Media is leading in most countries, including Brazil, Mexico, Spain, Indonesia and 26 other countries.
AdTotal is leading in Poland and Germany.