Of the many metrics available in Video Metrix, "Videos per Viewer" offers a strong indicator of viewer engagement, providing the average number of videos that were consumed by a target audience in a specific time period. Simply put, the more videos a user watches, the greater the opportunity to reach them with ads.Below we unveil the Top 10 YouTube Partners by Videos per Female Viewer. When it comes to Female audiences on YouTube, VEVO leads the way with an average of 15 videos per female viewer in July 2011. Smosh ranked second at 11.0, followed by Machinima at 10.3.These rankings are based on July 2011 data for YouTube Partner Reporting which included dozens of beta partners. Comscore and Google plan to initiate reporting of more partners with the release of August data.