Open AdExchange is leading in Top 1M Sites.
Open AdExchange has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Shopping, People & Society and 27 other categories.
ReferLocal is leading in News & Media and Chats & Forums.
Open AdExchange is leading in most countries, including Denmark, Sweden, Thailand and India.
ReferLocal is leading in United States, China and Japan.