sentences:  TV networks and rights holders are increasingly sharing video clips on social platforms to monetise engagement and drive tune-in.The social TV market covers the technologies that support communication and social interaction around TV as well as companies that study television-related social behavior and measure social media activities tied to specific TV broadcasts – many of which have attracted significant investment from established media and technology companies.The market is also seeing numerous tie-ups between broadcasters and social networking players such as Twitter and Facebook.