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 51 other categories.
Vertical Acuity is leading in Energy.
Harren Media is leading in most countries, including Brazil, Mexico, Spain, Russia and 25 other countries.
Vertical Acuity is leading in United States and Romania.