A recent MediaMind study highlights the avg. CTR for various display ad formats served in the U.S. Of the adformats, video ad-serving template (VAST) and video player-ad interface definition (VPAID) formats performed the best. While these are interesting results, “clicks are not always necessary, particularly when ads are brand focused (vs. DR) and/or when interactive ads appear in long-form video content where clicking would be disruptive to the experience.”