AdAction is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
AdAction has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Shopping and 73 other categories.
Silverpop is leading in Death, Health, Computer & Electronics, Career & Education and 53 other categories.
AdAction is leading in most countries, including Sweden, Norway, Netherlands, Denmark and 32 other countries.
Silverpop is leading in United States, United Kingdom, Australia, Canada and 18 other countries.