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 48 other categories.
Pollcaster is leading in Books & Literature, Fashion & Modeling, Consumer Electronics, Performing Arts and 9 other categories.
Zimbio is leading in most countries, including United States, Germany, France, United Kingdom and 31 other countries.
Pollcaster is leading in Estonia, India, Italy, Mexico and 4 other countries.