Pollcaster is leading in Top 10K Sites, 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 40 other categories.
Pollcaster is leading in Sports, Business Services, Fashion & Modeling, Health and 23 other categories.
Zimbio is leading in most countries, including Russia, United Kingdom, Poland, France and 23 other countries.
Pollcaster is leading in United States, Australia, Germany, Estonia and 13 other countries.