ContentClick is leading in Top 100K Sites and Top 1M Sites.
ContentClick has better usage coverage in more websites categories. Including Arts & Entertainment, Sports, Soccer, Internet & Telecom and 54 other categories.
Undertone Networks is leading in People & Society, News & Media, Business & Industry, Shopping and 50 other categories.
ContentClick is leading in most countries, including United Kingdom, India, Canada, Ireland and 25 other countries.
Undertone Networks is leading in United States, Brazil, Poland, Japan and 14 other countries.