Polar Polls 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 34 other categories.
Polar Polls is leading in News & Media, Internet & Telecom, Sports, Computer & Electronics and 31 other categories.
Polar Polls is leading in most countries, including Brazil, India, Mexico, Italy and 23 other countries.
Zimbio is leading in United States, Russia, France, Australia and 20 other countries.