Ad fraud, viewability and brand safety may turn out to be big digital ad buzz phrases this year.
Vertical ad units were consistently the most viewable. Worldwide, 120×240 placements performed the best for viewability, with a rate of 55.6%.
Screenwide display ads on mobile were tops for viewability.
970×250 ads had the highest in-view rate out of desktop display ads studied worldwide during Q3 2014, at 65.8%.