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httppool is leading in Top 1M Sites.
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DoubleClick AdExchange is leading in Top 10K Sites and Top 100K Sites.
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httppool has better usage coverage in more websites categories. Including Arts & Entertainment, News & Media, Business & Industry, People & Society and 88 other categories.
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DoubleClick AdExchange is leading in Travel, Tourism, Accommodation & Hotels, Newspapers and 21 other categories.
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DoubleClick AdExchange is leading in most countries, including Germany, United States, China, Turkey and 28 other countries.
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httppool is leading in Bulgaria, Serbia, Slovenia, Macedonia and 27 other countries.