Sanoma is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Silverpop has better usage coverage in more websites categories. Including Business & Industry, People & Society, Shopping, Death and 95 other categories.
Sanoma is leading in News & Media, Arts & Entertainment, Sports, Newspapers and 16 other categories.
Silverpop is leading in most countries, including United States, United Kingdom, Australia, Czech Republic and 47 other countries.
Sanoma is leading in Finland, Denmark, Norway, Peru and 10 other countries.