In terms of market share, GSI Media is clearly lagging behind, losing to Six Apart Advertising in all segments.
Six Apart Advertising has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Food & Drink, Music & Audio and 37 other categories.
GSI Media is leading in Internet & Telecom and Children.
Six Apart Advertising is leading in most countries, including United States, United Kingdom, Taiwan, Denmark and 14 other countries.
GSI Media is leading in China, Canada, Bulgaria and Turkey.