In terms of market share, ReferLocal is clearly lagging behind, losing to Testnet in all segments.
Testnet has better usage coverage in more websites categories. Including Internet & Telecom, Shopping, Sports, Autos & Vehicles and 9 other categories.
ReferLocal is leading in Business & Industry, News & Media, Arts & Entertainment, Music & Audio and 7 other categories.
ReferLocal is leading in most countries, including United States, China and Japan.
Testnet is leading in Belgium.