Pollcaster is leading in Top 100K Sites and Top 1M Sites.
Zimbio has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Music & Audio, Business & Industry and 41 other categories.
Pollcaster is leading in News & Media, Shopping, Fashion & Modeling, Business Services and 31 other categories.
Zimbio is leading in most countries, including Russia, United Kingdom, Spain, Canada and 22 other countries.
Pollcaster is leading in United States, Australia, Estonia, Germany and 16 other countries.