In terms of market share, Six Apart Advertising is clearly lagging behind, losing to Unicast in all segments.
Six Apart Advertising has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, News & Media, Humor and 55 other categories.
Unicast is leading in Performing Arts.
Six Apart Advertising is leading in most countries, including United States, United Kingdom, India, Bangladesh and 8 other countries.
Unicast hasn't got a lead over Six Apart Advertising in any country.