Playing games is still a more popular online activity in the US than watching short video clips or visiting social networking websites, according to Parks Associates. 34% of US adult Internet users play online games on a weekly basis, compared with 29% who watch short online videos and 19% who visit social networking sites with the same frequency. The YTY growth rate for frequent online gamers was 79%, significantly higher than the growth rate for users of social networking (46%). However, the growth rate for frequent users of video streaming sites was 123%, which could pose a significant challenge to the gaming industry in capturing the online leisure time of Internet users.