Survey: 70% of marketers use branded content in advertising: Seventy percent of marketers and 77% of agencies said they have used branded content as part of advertising in the past year, according to a survey by global newspaper website MailOnline. The study was based on an online survey of 610 marketers and ad agency executives conducted in April. It found that 66% of marketers said branded content marketing is very important to their marketing mix. The top source of branded content for advertisers is publishing partners (58%), followed by clients (49%) and third-party content producers (37%). When asked which tactics were most effective in achieving branding objectives, marketers cited video as the top tactic (26%), followed by branded content, social media and search (25% each). Other tactics cited were email (17%), mobile (14%) and display advertising (9%).