By many counts, YouTube is the second-largest search engine (behind Google and ahead of Yahoo). In June 2011, ComScore reported that Americans had more than 5.6 billion YouTube viewing sessions per month, with the average visitor frequenting the site 23 times a month at an average of 26 minutes per visit. Reports show that YouTube passed 20 billion video views during October 2011 alone…  Read more

Full article from Mashable.com