65% of the US adults surveyed by Harris Interactive said they have watched a video on YouTube, compared to 42% during the same time in 2006. More than 42% of YouTube viewers said they visit the site frequently, up from 33% in 2006. Apart from YouTube, 43% said they have watched a video on a TV network Web site, followed by 35% on news sites and less than 30% on search engines such as Yahoo and Google.