Facebook has become a massive driving force for YouTube videos, as people on the social network watch over 150 years worth of footage on an average day.

That statistic comes from Shiva Rajaraman, group product manager of YouTube, in a statement about the company’s acquisition of Fflick. The acquired online property taps into social media to find video content that people are discussing and recommending.

We’ve always believed that there are great conversations happening all the time off of YouTube.com, and that commentary has the potential to enrich your experience when watching and discovering video on YouTube itself. So today we’re excited to announce we’ve acquired Fflick, a talented team that analyzes social media data to surface great content and the discussions around it.

We were impressed by the technical talent, design instincts and entrepreneurial spirit of the Fflick team. As part of YouTube, the Fflick team will help us build features to connect you with the great videos talked about all over the web, and surface the best of those conversations for you to participate in.

With Fflick, Google might be looking to develop a “social rank” algorithm that determines the popularity of YouTube videos, based on comments and shares in social media, including Facebook.

Facebook ought to regard the acquisition of Fflick as a bit of a call to arms to pay more attention to video sharing lest the competition get ahead in this regard. YouTube’s corporate parent Google is considered by many to be the social network’s biggest rival, and together they might leapfrog ahead in getting people to share more movie content without having to rely on other sites.