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Marchex is leading in The Entire Web.
2
Ambient Digital is leading in Top 100K Sites and Top 1M Sites.
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Ambient Digital has better usage coverage in more websites categories. Including News & Media, Arts & Entertainment, Computers Electronics & Technology, Science & Education and 16 other categories.
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Marchex is leading in Home & Garden.
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Marchex is leading in most countries, including United States, China, India, Italy and 55 other countries.
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Ambient Digital is leading in Vietnam, Philippines, Belgium and Iran.