DoubleClick AdExchange is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
httppool has better usage coverage in more websites categories. Including Arts & Entertainment, Business & Industry, News & Media, People & Society and 86 other categories.
DoubleClick AdExchange is leading in Travel, Tourism, Accommodation & Hotels, Pets & Animals and 27 other categories.
httppool is leading in most countries, including Bulgaria, Serbia, Macedonia, Slovenia and 28 other countries.
DoubleClick AdExchange is leading in Germany, United States, China, Turkey and 26 other countries.