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FeedBurner is leading in Top 100K Sites, Top 1M Sites and The Entire Web.
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iPinYou is leading in Top 10K Sites.
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FeedBurner has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Science & Education, Community & Society and 17 other categories.
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iPinYou is leading in Business & Consumer Services, Travel & Tourism and E-commerce & Shopping.
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FeedBurner is leading in most countries, including United States, Russia, India, Italy and 103 other countries.
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iPinYou is leading in China, Hong Kong and Macao.