Twitter restores ad king's faith in papers MARTIN Sorrell, the founder of the world's largest advertising company WPP, has said consumers are more "engaged with newspapers than people thought," and upped his criticism of local ASX-listed advertising group STW. In a wide-ranging interview with The Australian at the 60th Cannes Lions International Festival of Creativity, Sir Martin appeared to row back on comments he made about newspapers two months ago, and also told Facebook and Google to take responsibility for their content.