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Project Wonderful is leading in Top 100K Sites and Top 1M Sites.
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Marchex is leading in Top 10K Sites.
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Project Wonderful has better usage coverage in more websites categories. Including Arts & Entertainment, Games, Adult, Computers Electronics & Technology and 18 other categories.
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Marchex is leading in Gambling.
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Project Wonderful is leading in most countries, including United States, Canada, United Kingdom, Philippines and 29 other countries.
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Marchex is leading in China, India, Italy, Egypt and 23 other countries.