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 43 other categories.
Pollcaster is leading in Fashion & Modeling, Finance, Beauty & Fitness, Weight Loss and 13 other categories.
Zimbio is leading in most countries, including United States, Russia, United Kingdom, Brazil and 30 other countries.
Pollcaster is leading in Estonia, Australia, Malaysia and Korea Republic.