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 45 other categories.
Pollcaster is leading in Newspapers, Weight Loss, Beauty & Fitness, Fashion & Modeling and 11 other categories.
Zimbio is leading in most countries, including United States, Russia, United Kingdom, Poland and 29 other countries.
Pollcaster is leading in Estonia, Australia, Singapore, Italy and 6 other countries.