Google Inc's YouTube said on Thursday the number of unique users visiting the video-sharing website every month has reached 1 billion, about six months after social media company Facebook Inc also said it had the same amount of users.
(http://www.channelstv.com/home/wp-content/uploads/2012/04/yOutube2.jpg) (http://www.channelstv.com/home/wp-content/uploads/2012/04/yOutube2.jpg)"Nearly one out of every two people on the Internet visits YouTube," the video website said in a blog post.
Facebook said it had passed the one billion user mark in September, a level of global penetration that has made its quest for sustained growth more challenging.
Via: ChannelsTV
I wouldn't doubt that in any way. Youtube is very popular so that is expected. It is perfectly believable I must say.