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Rubicon Project is leading in Top 10K Sites and Top 100K Sites.
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BBelements is leading in Top 1M Sites.
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Rubicon Project has better usage coverage in more websites categories. Including Internet & Telecom, News & Media, Chats & Forums, Sports and 95 other categories.
2
BBelements is leading in Arts & Entertainment, People & Society, Food & Drink, Cooking & Recipes and 87 other categories.
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Rubicon Project is leading in most countries, including United States, France, Japan, Spain and 129 other countries.
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BBelements is leading in Poland, Czech Republic, Lithuania, Slovakia and 26 other countries.