YouTube website performance statistics

Since the company’s inception in 2005, YouTube’s popularity has gone viral, with millions of viewers visiting and watching every day.
According to Nielsen Online, YouTube was the fifth-most-popular Web brand in the US, with over 83 million unique visitors in February.
Credit Suisse estimates that 41% of all US video streams will go through YouTube in 2009, and the site will see 375 million unique viewers worldwide.